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Gilbert's Syndrome is a common, benign genetic condition affecting how the liver processes bilirubin, a yellow compound produced when red blood cells break down. It is caused by a mutation in the UGT1A1 gene that reduces the liver's ability to conjugate bilirubin effectively. The Bilirubin, Total test is the most important test for diagnosis as it reveals the characteristic elevated bilirubin levels that confirm this condition.
Gilbert's Syndrome is caused by a genetic mutation in the UGT1A1 gene that reduces the production of an enzyme called UDP-glucuronosyltransferase. This enzyme is responsible for processing bilirubin in the liver by converting it from its indirect (unconjugated) form to its direct (conjugated) form so it can be eliminated from the body. When this enzyme is reduced by about 70%, bilirubin builds up in the bloodstream, leading to mildly elevated levels that can cause occasional jaundice, especially during times of stress, fasting, or illness.
The Bilirubin, Total test is the most important test for Gilbert's Syndrome because it reveals elevated total bilirubin levels, which is the hallmark of this condition. A comprehensive diagnosis typically includes the Bilirubin, Direct test to confirm that direct bilirubin remains normal while indirect bilirubin is elevated, creating the characteristic pattern that distinguishes Gilbert's Syndrome from other liver disorders. The Liver Function Profile provides additional confirmation by showing that other liver enzymes remain normal despite the elevated indirect bilirubin, which reassures both patients and doctors that the condition is benign and not a sign of serious liver disease.
You should get tested if you notice your skin or the whites of your eyes turning slightly yellow (jaundice), especially after periods of fasting, stress, illness, or intense exercise. Testing is also recommended if you have unexplained fatigue or if routine blood work shows mildly elevated bilirubin levels that your doctor wants to investigate further. Many people discover they have Gilbert's Syndrome incidentally during blood tests for other reasons, so if you have a family history of the condition or experience recurring mild jaundice, getting tested can provide clarity and peace of mind.
What this means
Your total bilirubin is slightly elevated above the normal range. While mild elevations can be harmless (such as in Gilbert syndrome), it's worth monitoring as it may indicate your liver is under stress or not processing bilirubin efficiently. This could contribute to subtle symptoms like fatigue or occasional yellowing of the eyes.
Recommended actions
Limit or avoid alcohol consumption to reduce liver stress
Stay well-hydrated and eat a liver-friendly diet with plenty of vegetables and whole grains
Avoid prolonged fasting, which can temporarily raise bilirubin levels
Consider retesting in 4-6 weeks to see if levels normalize or remain elevated
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