Bilirubin 1.5 mg/dL: what it means

What usually happens next

With otherwise normal liver tests and blood count, the most common reason is Gilbert's syndrome, a harmless inherited trait in about 5 to 10% of people that raises the indirect (unconjugated) bilirubin, more so with fasting, illness or stress.

A split into direct and indirect bilirubin is the usual next step: if most of it is direct, the liver and bile ducts are looked at.

What a high bilirubin usually means, and its common causes

When a bilirubin can read wrong

Fasting, illness and a hard workout raise bilirubin, especially in people with Gilbert's syndrome. Red cells that break down in the body (or in the tube) raise the indirect part, and some medicines raise it too.

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Questions

Is a bilirubin of 1.5 mg/dL normal?

A total bilirubin of 1.5 mg/dL is above the usual 0.1 to 1.2 mg/dL. The usual range is about 0.1 to 1.2 mg/dL.

What is 1.5 mg/dL in µmol/L?

26 µmol/L. Labs in different countries print Bilirubin in different units; the meaning is the same.

Is a bilirubin of 1.5 mg/dL a sign of liver disease?

A mildly high total bilirubin with normal ALT, AST and ALP is most often Gilbert's syndrome, which is harmless. A direct bilirubin and liver tests tell the two apart.

Worked out by LifeFrom from the ACG guideline on abnormal liver tests, and not yet reviewed by a clinician. For your own understanding: only a lab test, read by your clinician, diagnoses anything.