How To Read and Understand Bilirubin Test Results?

Bilirubin is a yellow compound that is produced during the normal breakdown of red blood cells1. It exists in two forms in the body: unconjugated (indirect) and conjugated (direct)1. The total bilirubin level is the sum of your direct and indirect bilirubin levels.

Examples are the best method for well understanding your bilirubin lab results 

What is the meaning of my total bilirubin 15 and direct 9?

The normal values for bilirubin levels can vary, but generally, in an adult, normal values of direct bilirubin range from 0 to 0.4 mg/dL, and normal values of total bilirubin range from about 0.2 to 1.2 mg/dL12.

If your total bilirubin is 15 and direct is 9, it means your bilirubin levels are significantly higher than the normal range. 

High bilirubin levels may indicate that either your red blood cells are breaking down at an unusual rate or that your liver isn’t breaking down waste properly and clearing the bilirubin from your blood. 

It could also mean there’s a problem somewhere along the pathway that gets the bilirubin out of your liver and into your stool.

High levels of bilirubin in the blood can lead to jaundice, a condition in which the skin and eyes turn yellow, and may indicate underlying health problems. 

It could also help determine if you have sickle cell disease or other conditions that cause hemolytic anemia.

What is the meaning of my total bilirubin 11 and direct 6?

Your bilirubin results (total: 11, direct: 6 mg/dL) show a significantly elevated total bilirubin level with a high proportion being direct bilirubin. For understanding your Bilirubin Levels:

Total Bilirubin (11 mg/dL): This is very high. Normally, it's below 1.0 mg/dL.

Direct Bilirubin (6 mg/dL): This is also considerably elevated. While it's a smaller concern than very high indirect bilirubin alone, a high value with a high total bilirubin is significant.

Possible Causes:

Liver problems: This could include hepatitis, cirrhosis, or blockage of bile ducts due to gallstones or other causes. A high direct bilirubin often points towards liver or bile duct issues.

Severe red blood cell breakdown: Hemolytic anemia or internal bleeding can cause this, but it's less likely as the direct bilirubin is also high.

What to Do is to do complete liver function test an go to a specialist internal diseases specialist.

If my total bilirubin 7 direct 2 and indirect 5?

The normal values for bilirubin levels can vary, but generally, in an adult, normal values of direct bilirubin range from 0 to 0.4 mg/dL, and normal values of total bilirubin range from about 0.2 to 1.2 mg/dL.

If your total bilirubin is 7, direct is 2, and indirect is 5, it means your bilirubin levels are significantly higher than the normal range. 

High bilirubin levels may indicate that either your red blood cells are breaking down at an unusual rate or that your liver isn’t breaking down waste properly and clearing the bilirubin from your blood1.

It could also mean there’s a problem somewhere along the pathway that gets the bilirubin out of your liver and into your stool.

High levels of bilirubin in the blood can lead to jaundice, a condition in which the skin and eyes turn yellow, and may indicate underlying health problems. 

It could also help determine if you have sickle cell disease or other conditions that cause hemolytic anemia.

what could be the reason if my total bilirubin 14 direct 3 and indirect 11?

Your bilirubin results (total: 14, direct: 3, indirect: 11 mg/dL) show a very high total bilirubin level with a large portion being indirect bilirubin. 

Total Bilirubin (14 mg/dL): This is extremely high. Normally, it's below 1.0 mg/dL. This significant elevation suggests a problem with bilirubin processing in your body.

Direct Bilirubin (3 mg/dL): This is mildly elevated compared to the normal range (around 0.3 mg/dL). While a lower proportion than the indirect bilirubin, it can't be entirely ignored.

Indirect Bilirubin (11 mg/dL): This is very high and indicates a substantial amount of unprocessed bilirubin circulating in your blood.

What are the possible reasons? 

Increased Red Blood Cell Breakdown: Severe hemolytic anemia or internal bleeding are possibilities, but the relatively low direct bilirubin makes this slightly less likely.

Gilbert's Syndrome (unlikely): This common condition causes mildly elevated indirect bilirubin, but not typically to this degree.

Liver Dysfunction: This is a strong possibility considering the overall bilirubin levels. Conditions like hepatitis, cirrhosis, or certain medications can impair the liver's ability to process bilirubin.

Bile Duct Blockage: A blockage in the bile ducts, which carry bilirubin from the liver, can cause a backup and lead to elevated levels, especially of direct bilirubin. However, the high indirect bilirubin also suggests potential issues beyond just blockage.

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what if I have total bilirubin 5 and direct 2.5 and indirect 2.5?

 Bilirubin is an orange-yellow pigment that occurs normally when part of your red blood cells break down1. It’s used to help find the cause of health conditions like jaundice, anemia, and liver disease.

Your breakdown of bilirubin results (total: 5, direct: 2.5, indirect: 2.5 mg/dL) suggests an elevated total bilirubin level with an even split between direct and indirect bilirubin. While I can't provide medical advice, here's some general information to help you understand what this might mean and what to do next:

Understanding the Bilirubin Levels: 

Total Bilirubin (5 mg/dL): Generally considered elevated (normal range typically below 1.0 mg/dL).

Direct Bilirubin (2.5 mg/dL): While elevated, it's often a less concerning sign compared to very high direct bilirubin.

Indirect Bilirubin (2.5 mg/dL): Also elevated, indicating increased unprocessed bilirubin in the blood.

What does these results mean?

Conditions affecting the liver or bile ducts: These could include hepatitis, cholangitis (bile duct infection), or cholelithiasis (gallstones).

Increased red blood cell breakdown: This can be caused by hemolytic anemia or certain medications.

Gilbert's syndrome: This is a common, inherited condition where the liver processes bilirubin less efficiently, though it usually doesn't cause significant health problems.

Recommend you to consult a healthcare professional to discuss your test results and medical history or just message me to redirect you.

While the split between direct and indirect bilirubin is somewhat reassuring, an elevated total bilirubin still requires investigation. Early diagnosis and treatment can be crucial for some conditions.

Ask about your symptoms (fatigue, dark urine, jaundice), medications you take, and family medical history.

Having a list of questions can ensure you get all the information you need from me.

A bilirubin test measures total bilirubin and can also give levels of two types of bilirubin: unconjugated (indirect) and conjugated (direct). The normal values for bilirubin levels can vary, but generally, in an older child or adult, normal values of direct bilirubin are from 0–0.4 milligrams per deciliter (mg/dL), and normal values of total bilirubin are from 0 - 1.2 mg/dL.

If your total bilirubin is 5 and direct is 2.5 and indirect is 2.5, it means your bilirubin levels are higher than the normal range. High bilirubin levels may indicate that either your red blood cells are breaking down at an unusual rate or that your liver isn’t breaking down waste properly and clearing the bilirubin from your blood.

It could also mean there’s a problem somewhere along the pathway that gets the bilirubin out of your liver and into your stool.

High levels of bilirubin in the blood can lead to jaundice, a condition in which the skin and eyes turn yellow, and may indicate underlying health problems. It could also help determine if you have sickle cell disease or other conditions that cause hemolytic anemia.

Explaining Elevated indirect bilirubin for ordinary person who can't access complex medical information

Bilirubin is a yellowish substance that your body makes when it breaks down red blood cells. Now, there are two types of bilirubin: direct and indirect.

Elevated indirect bilirubin means there's more than usual of a yellowish substance called bilirubin floating around in your bloodstream, but it hasn't reached the liver yet. 

Bilirubin is a waste product made when your body breaks down old red blood cells. Normally, your liver grabs this bilirubin, processes it, and then gets rid of it through your stool.

Here's the breakdown for what an elevated indirect bilirubin might mean:

Doctors usually worry if your indirect bilirubin is in High Numbers above 1.0 mg/dL.

There are a few reasons why this might happen. One common cause is a condition called Gilbert's syndrome. This is where your liver is naturally less good at processing bilirubin, but it's usually harmless.

Also, increased red blood cell breakdown due to infections, medications, or inherited blood disorders like sickle cell disease. In newborns, it can be normal for bilirubin to be a bit high for the first few days of life (physiologic jaundice), but very high levels can be serious.

If your bilirubin is very high you might notice Symptoms to Watch For such as your skin or the whites of your eyes turning yellow (jaundice). This can also be accompanied by fatigue, dark urine, or pale stools.

If you're concerned about your bilirubin levels, the best thing to do is talk to me. We can do a blood test to check your levels and figure out what's going on.  Early diagnosis and treatment can be important for some conditions.

Indirect bilirubin is the type that hasn’t been processed by the liver yet. It’s like a package that’s waiting to be delivered to your liver.

Now, if you have a high level of indirect bilirubin, it could mean a few things:

Hemolytic Anemia: This is a condition where your body is getting rid of too many red blood cells. Imagine your body as a factory, and it’s working overtime to break down red blood cells. This could lead to a buildup of indirect bilirubin. For example, a patient with hemolytic anemia might have an indirect bilirubin level of 2.0 mg/dL, which is higher than the typical result.

Gilbert’s Syndrome: This is a genetic condition that causes your liver not to process bilirubin properly. It’s like the package is at the delivery center (your liver), but there’s a problem with the delivery process. A patient with Gilbert’s syndrome might have an indirect bilirubin level of 1.5 mg/dL, indicating a problem with the liver’s ability to process bilirubin.

Liver Dysfunction: This can be any condition that affects the function of your liver and causes bilirubin to build up in your blood. It’s like the delivery center (your liver) is not working properly. A patient with liver dysfunction might have an indirect bilirubin level of 1.8 mg/dL.

Hepatitis: This happens when your liver becomes inflamed, often due to a viral infection such as Virus C. When it’s inflamed, your liver can’t easily process bilirubin, leading to a buildup of it in your blood. A patient with hepatitis might have an indirect bilirubin level of 2.2 mg/dL.

For Instance:

indirect bilirubin 3.0 means moderately elevated. While it's not ideal, it may not necessarily be a cause for immediate alarm.

Normal range: Generally, indirect bilirubin levels are considered normal if below 1.0 mg/dL.

Your result (3.0 mg/dL): This indicates your body has more unprocessed bilirubin than usual circulating in your blood.

Possible reasons:

Gilbert's syndrome: This is a common, often harmless, condition where your liver naturally processes bilirubin less efficiently.

Increased red blood cell breakdown: Infections, certain medications, or inherited blood disorders can cause your body to break down red blood cells faster than usual, leading to higher bilirubin levels.

Example two: indirect bilirubin 10.0 meaning

An indirect bilirubin of 10.0 mg/dL is significantly elevated and requires prompt medical attention. This level suggests a substantial amount of unprocessed bilirubin circulating in your bloodstream.

Normal range: Generally, indirect bilirubin levels are considered normal if below 1.0 mg/dL. An increase to 10.0 mg/dL indicates a much higher level than usual.

Possible causes: Severe red blood cell breakdown: This could be due to serious conditions like hemolytic anemia (increased red blood cell destruction) or internal bleeding.

Liver dysfunction: While indirect bilirubin is typically processed by the liver, very high levels may indicate the liver is struggling to keep up, potentially due to hepatitis, cirrhosis, or other liver problems.

Bile duct blockage: A blockage in the bile ducts, which carry bilirubin from the liver to the intestines for excretion, can prevent proper processing and lead to a backup of bilirubin in the bloodstream.

What to do? 

Due to the severity of this level, it's crucial to see a doctor right away. They can perform further tests to diagnose the underlying cause and recommend appropriate treatment or message us to redirecting you.

Symptoms to watch for: 

Jaundice: This is the most common symptom, causing yellowing of the skin and whites of the eyes.

Dark urine: This can occur as the body tries to remove excess bilirubin through urine.

Pale stools: Reduced bilirubin excretion in stool may lead to pale-colored stools.

Fatigue, nausea, or abdominal pain: These can occur depending on the underlying cause.

My Lab show Elevated direct bilirubin test results, what can cause that?

Elevated direct bilirubin levels (generally > 0.3 mg/dL) can indicate liver or bile duct problems.

Conditions that can cause elevated direct (conjugated) bilirubin levels, along with lab test results:

Liver Disease: Conditions such as viral or autoimmune hepatitis, or alcoholic liver disease can cause elevated direct bilirubin. 

For example, a patient with alcoholic liver disease might have a direct bilirubin level of 0.8 mg/dL, which is higher than the typical result for direct bilirubin.

Gallstones: These develop when substances like cholesterol or bilirubin harden in your gallbladder. A patient with gallstones might have a direct bilirubin level of 1.2 mg/dL, indicating a problem with bile excretion.

Gallbladder Inflammation or Tumors: These conditions can cause a blockage in the bile ducts, leading to elevated direct bilirubin. For instance, a patient with gallbladder inflammation might have a direct bilirubin level of 1.5 mg/dL.

Inflamed Pancreas (Pancreatitis): This condition can cause a blockage in the bile ducts, leading to elevated direct bilirubin1. A patient with pancreatitis might have a direct bilirubin level of 1.0 mg/dL.

Inflamed Appendix (Appendicitis): This can also cause a blockage in the bile ducts, leading to elevated direct bilirubin1. A patient with appendicitis might have a direct bilirubin level of 0.9 mg/dL.

Rare Genetic Disorders: Some genetic disorders can cause elevated direct bilirubin1. For example, a patient with a rare genetic disorder might have a direct bilirubin level of 1.3 mg/dL.

Biliary Disease: If your body is having trouble clearing bilirubin, this might indicate a biliary disease2. A patient with biliary disease might have a direct bilirubin level of 1.1 mg/dL.

Gallstone Disease: This condition can cause a blockage in the bile ducts, leading to elevated direct bilirubin. A patient with gallstone disease might have a direct bilirubin level of 1.4 mg/dL.

Cholelithiasis (Gallstones):  Direct bilirubin: May be mildly elevated (1.0 - 3.0 mg/dL) during episodes of biliary obstruction.  Ultrasound imaging will typically show gallstones.

Liver Dysfunction: Any condition that affects the function of your liver and causes bilirubin to build up in your blood can lead to elevated direct bilirubin. Examples include cirrhosis, liver cancer, or autoimmune hepatitis. A patient with liver dysfunction might have a direct bilirubin level of 1.6 mg/dL.

Hepatitis: This happens when your liver becomes inflamed, often due to a viral infection. When it’s inflamed, your liver can’t easily process bilirubin, leading to a buildup of it in your blood. A patient with hepatitis might have a direct bilirubin level of 1.7 mg/dL. Viral Hepatitis (A, B, or C):  Direct bilirubin: 2.0 - 10.0 mg/dL or higher.  Liver enzymes (ALT, AST) also often elevated.  Viral tests will be positive for specific hepatitis type.

Drug-Induced Liver Injury:  Direct bilirubin: Varies depending on medication and severity.  Liver enzymes (ALT, AST) may also be elevated.  Detailed medication history is crucial for diagnosis.

Alcoholic Liver Disease:  Direct bilirubin: Can range from mildly to significantly elevated (> 10.0 mg/dL) in severe cases.  Liver enzymes (ALT, AST) often elevated.  GGT (gamma-glutamyl transferase) levels typically high in alcoholic liver disease.

Autoimmune Hepatitis:  Direct bilirubin: 2.0 - 10.0 mg/dL or higher.  Liver enzymes (ALT, AST) often elevated.  Autoimmune markers may be positive in blood tests.

Primary Biliary Cholangitis (PBC):  Direct bilirubin: Progressive increase over time.  ALP (alkaline phosphatase) levels typically very high.  Anti-mitochondrial antibody (AMA) test usually positive.

Cholangitis (Bile Duct Infection):  Direct bilirubin: 2.0 - 10.0 mg/dL or higher.  Liver enzymes (ALT, AST) may also be elevated.  Blood cultures may show signs of infection.

Pancreatitis (Inflammation of the Pancreas):  Direct bilirubin: May be mildly to moderately elevated (2.0 - 5.0 mg/dL) due to inflammation affecting bile ducts.  Lipase and amylase enzymes in the blood are typically elevated in pancreatitis.

Sclerosing Cholangitis (Scarring of Bile Ducts): Direct bilirubin: Progressive increase over time.  ALP (alkaline phosphatase) levels often elevated.  ERCP (endoscopic retrograde cholangiopancreatography) may be used to visualize bile duct strictures.

Liver Tumors:  Varies depending on tumor type and severity.  Liver function tests may be abnormal.  Imaging studies (CT scan, MRI) may reveal liver masses.

Understand Differences Direct bilirubin Vs Indirect Bilirubin Test Results

Bilirubin is a yellow pigment that is created by the breakdown of old red blood cells in the body. It is removed from the body by the liver, processed, and excreted in the stool. 

The measurement of bilirubin levels in the blood is an important diagnostic tool for many health conditions and included in Liver Function Test Panel, particularly those related to the liver and the blood. 

There are two types of bilirubin that are typically measured: direct bilirubin and indirect bilirubin.

Direct Bilirubin

Direct bilirubin, also known as conjugated bilirubin, is the type of bilirubin that has been processed by the liver and is ready to be removed from the body1. It is water-soluble, which means it can be dissolved in water and excreted in the urine1. Direct bilirubin is like a package that is ready for delivery.

High levels of direct bilirubin in the blood can indicate a problem with the liver’s ability to process bilirubin, or a blockage in the bile ducts that prevents the bilirubin from being excreted. Conditions that can cause high levels of direct bilirubin include hepatitis, cirrhosis, and gallstones.

Indirect Bilirubin

Indirect bilirubin, also known as unconjugated bilirubin, is the type of bilirubin that has not yet been processed by the liver1. It is not water-soluble and is bound to a protein in the blood called albumin that helps carry it to the liver3. Indirect bilirubin is like raw material waiting to be processed.

High levels of indirect bilirubin can indicate that the body is breaking down red blood cells too quickly, or that the liver is not able to process the bilirubin quickly enough23. Conditions that can cause high levels of indirect bilirubin include hemolytic anemia, Gilbert’s syndrome, and Crigler-Najjar syndrome.

What is differences between Direct bilirubin and indirect bilirubin?

Direct and indirect bilirubin play different roles in the body and provide different information about the body’s health. Direct bilirubin is a measure of the liver’s ability to process and excrete bilirubin, while indirect bilirubin is a measure of the amount of bilirubin being produced by the breakdown of red blood cells.

Both types of bilirubin can be measured in the blood, and the total bilirubin level is the sum of the direct and indirect bilirubin levels. However, the normal ranges for direct and indirect bilirubin can vary, and it is possible for one type of bilirubin to be high while the other is normal.

Examples of bilirubin test results:

Example 1: A healthy adult has a total bilirubin level of 0.8 mg/dL. This falls within the typical range for adults, which is less than 1.2 mg/dL.

Example 2: A newborn baby has a total bilirubin level of 12 mg/dL. This is considered high for a newborn, as jaundice usually becomes visible at a level of 2 to 3 mg/dL.

Example 3: An adult patient with liver disease has a direct bilirubin level of 0.6 mg/dL. This is higher than the typical result for direct bilirubin, which is generally 0.3 mg/dL.

Example 4: A patient with hemolytic anemia, a condition where red blood cells are broken down too quickly, has an indirect bilirubin level of 2.0 mg/dL. This is higher than the typical result for indirect bilirubin, indicating that the body is producing bilirubin faster than the liver can process it.

A quick comparison of direct bilirubin vs. indirect bilirubin:

Feature	Direct Bilirubin	Indirect Bilirubin
Medical name	Conjugated bilirubin	Unconjugated bilirubin
Where	Processed by the liver	Breakdown product of red blood cells
Solubility	Water-soluble	Fat-soluble (needs albumin to travel in blood)
Normal level	Lower (around 0.3 mg/dL)	Higher (around 0.2-0.8 mg/dL)
Meaning of high levels	Indicates liver or bile duct problems	May indicate increased red blood cell breakdown

In conclusion, direct and indirect bilirubin are both important measures of the liver function. They provide information about the functioning of the liver and biliary ducts, the health of the red blood cells, and the presence of certain diseases. Understanding the differences between direct and indirect bilirubin can help in the differential diagnosis and treatment.

Meaning of High total bilirubin levels in children, bilirubin Total test results decoded

Explaining how can High Total Bilirubin Levels in Children affect kids and their mommies, remember that Liver function Test LFT contain Bilirubin types

If your child has high bilirubin levels and you have concerns about future pregnancy, it's important to discuss this with me.  We can provide specific information based on the underlying cause and its potential impact on future fertility.

1. What is bilirubin and why is it measured in children?

Bilirubin is a yellow pigment produced by the breakdown of red blood cells in the liver. A bilirubin test measures the amount of bilirubin in your child's blood.  This test helps identify liver problems, increased red blood cell breakdown, or bile duct blockages.

2. What are normal bilirubin levels in children?

Normal bilirubin levels can vary slightly depending on the lab and your child's age. Generally, for children over 15 days old, normal total bilirubin is less than 1.0 mg/dL.  However, always consult your pediatrician for the specific interpretation of your child's results.

3. My child's bilirubin is high. What does that mean?

A mildly elevated bilirubin level may not be a cause for concern, especially in newborns. However, significantly high levels can indicate underlying conditions.  Your pediatrician will consider the bilirubin result, your child's symptoms, and other factors to determine the cause.

4. What are the symptoms of high bilirubin in children?

A common symptom of high bilirubin is jaundice, a yellowing of the skin and whites of the eyes.  Dark urine, pale stools, fatigue, and poor feeding may also occur depending on the cause.

5.  If my newborn has high bilirubin, is that serious?

Most newborns have slightly high bilirubin levels (physiologic jaundice) in the first few days of life. This usually resolves on its own within a week and is not serious. However, very high bilirubin levels can be dangerous for newborns and require treatment to prevent brain damage (kernicterus).

6. What causes high bilirubin levels in newborns?

Immature livers in newborns can sometimes struggle to process bilirubin efficiently.  Incompatibility between mother and baby's blood types or certain breastfeeding problems can also contribute.

7. What causes high bilirubin levels in older children?

Several conditions can cause high bilirubin in older children, including:

1. Gilbert's syndrome (a mild, inherited liver condition)
2. Hemolytic anemia (increased red blood cell breakdown)
3. Hepatitis (liver inflammation)
4. Biliary atresia (a blocked bile duct)

8. How is high bilirubin treated in children?

Treatment depends on the underlying cause and the severity of the bilirubin elevation.  For newborns, phototherapy (light treatment) is often used to help reduce bilirubin levels.  In some cases, medications or even procedures may be needed.

9.  If my child has high bilirubin, what tests might be done?

Besides a bilirubin test, your pediatrician may recommend other blood tests, imaging studies (ultrasound), or liver function tests to diagnose the cause.

10.  Will my child need to see a liver specialist?

Not necessarily.  Your pediatrician can often manage mild to moderate cases of high bilirubin.  However, if the cause is complex or requires specialized treatment, a referral to a pediatric gastroenterologist or hepatologist (liver specialist) may be necessary.

11.  Can certain medications affect bilirubin levels?

Yes, some medications can interfere with bilirubin processing in the liver.  Tell your pediatrician about all medications your child takes before any blood tests.

12.  Does diet play a role in managing high bilirubin?

In some cases, dietary changes may be recommended depending on the cause of the high bilirubin.  Your pediatrician will provide specific guidance.

13.  Is high bilirubin contagious?

No, high bilirubin itself is not contagious.  However, some underlying causes, like viral hepatitis, can be contagious.

14.  Can high bilirubin levels cause long-term problems?

In most cases, if treated promptly, high bilirubin does not cause lasting health problems.  However, very high bilirubin levels in newborns can lead to kernicterus, which can cause permanent brain damage.

15.  What should I watch for at home if my child has high bilirubin?

Follow your pediatrician's instructions carefully.  Monitor your child for signs of worsening jaundice, dark urine, pale stools, or changes in feeding or behavior.  Call your doctor if you have any concerns.

16.  How often will my child need bilirubin tests if their levels are high?

The frequency of bilirubin testing depends on the severity of the elevation and the underlying cause.  Your pediatrician will determine the appropriate monitoring schedule.

17.  Can high bilirubin levels affect future pregnancy?

Generally, high bilirubin in a child does not directly affect their future fertility.  However, certain conditions that cause high bilirubin can impact pregnancy in some cases.

Gilbert's syndrome: This common, inherited condition usually doesn't cause complications during pregnancy.

Hemolytic anemia:  The type and severity of hemolytic anemia determine the impact on pregnancy.  Some types may require closer monitoring or management during pregnancy to avoid complications for both mother and baby.

Chronic liver disease: Women with chronic liver disease should discuss pregnancy with their doctor beforehand.  Depending on the severity, 

Biliary atresia: This is a rare condition.  If a woman has biliary atresia that required corrective surgery as a child, it's important to discuss potential risks and preconception counseling with a healthcare provider specializing in both biliary atresia and pregnancy.

Causes of High total bilirubin levels in neonates, bilirubin test results Explained

Bilirubin is one of liver function tests

What is neonatal hyperbilirubinemia? 

Neonatal hyperbilirubinemia is a condition where there is too much bilirubin in a newborn’s blood, causing a yellow discoloration of the skin and eyes.

What causes neonatal hyperbilirubinemia? 

It can be caused by several factors including physiological jaundice, breastfeeding failure, breastmilk jaundice, jaundice from hemolysis, and jaundice caused by poor liver function.

What is the normal bilirubin level in neonates? 

Jaundice usually becomes visible on the sclera at a level of 2 to 3 mg/dL (34 to 51 micromol/L) and on the face at about 4 to 5 mg/dL (68 to 86 micromol/L).

When does jaundice appear in neonates? 

Slightly more than half of all neonates become visibly jaundiced in the first week of life.

What is the threshold for concern for bilirubin levels in healthy term infants? 

Among healthy term infants, the threshold for concern typically is considered to be a level > 18 mg/dL (> 308 micromol/L).

What is the threshold for concern for bilirubin levels in preterm infants? 

A bilirubin concentration > 10 mg/dL (> 171 micromol/L) in preterm infants warrants additional testing.

What tests are done when bilirubin levels are high? 

Additional testing may include hematocrit, blood smear, reticulocyte count, direct Coombs test, total serum bilirubin and direct bilirubin1.

What is the risk of high bilirubin levels in neonates? 

High bilirubin concentrations can cause acute bilirubin encephalopathy and kernicterus, a permanent disabling neurologic condition3.

What are the symptoms of kernicterus? 

Kernicterus is characterized by choreoathetoid cerebral palsy, upward gaze paresis, enamel dysplasia of deciduous teeth, sensorineural hearing loss or auditory neuropathy or dyssynchrony spectrum disorder, and characteristic findings on brain MRI3.

What is the treatment for high bilirubin levels in neonates? 

Treatment options include phototherapy and exchange transfusion.

What percentage of full-term newborns get jaundice? 

About 60% of full-term newborns get jaundice.

What percentage of premature babies get jaundice? 

About 80% of premature babies get jaundice.

What is physiological jaundice? 

Physiological jaundice happens as a response to a baby’s reduced ability to remove bilirubin.

What is breastfeeding failure jaundice? 

Some babies don’t breastfeed well at first, which can lead to jaundice.

What is breastmilk jaundice? 

About 2% of breastfed babies get jaundice.

What is jaundice from hemolysis? 

Jaundice from hemolysis is a type of jaundice that occurs when red blood cells break down at a fast rate.

What is jaundice caused by poor liver function? 

Jaundice caused by poor liver function occurs when the liver is unable to properly process bilirubin.

What is the major consequence of neonatal hyperbilirubinemia? 

Neurotoxicity is the major consequence of neonatal hyperbilirubinemia.

What is the risk of hyperbilirubinemia in neonates? 

Risk of hyperbilirubinemia is based on age-specific total serum bilirubin levels.

What is the treatment for neonatal hyperbilirubinemia? 

The treatment for neonatal hyperbilirubinemia includes phototherapy and exchange transfusion