Bilirubin, direct — lab reference
In the reference guideAsk your clinician to review direct and indirect fractions together.
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What’s searchable?Ask your clinician to review direct and indirect fractions together.
Fasting, Gilbert syndrome, hemolysis, and liver disease may alter result.
Acute-phase reactant; used in hemolysis evaluation with LDH, bilirubin, and reticulocytes.
Reagent-specific; affected by heparin, direct thrombin inhibitors, and fibrinogen abnormalities.
Direct renin and plasma renin activity are not interchangeable.
Your lab may use its own range. Symptoms, medicines, and the types of white blood cells also matter.
Altitude, smoking, hydration, androgen therapy, and pregnancy may shift values.
Ask your clinician to consider altitude and iron/B12/folate status. Pregnancy requires trimester-specific ranges.
Hydration and altitude are major modifiers. Ask your clinician to review alongside hemoglobin and RBC indices.
Macrocytosis and microcytosis require cause-specific interpretation.
The test method matters. Ask your clinician to review with MCV and MCHC.
Analyzer-specific; hemolysis and cold agglutinins may interfere.
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