Test guide
Direct Bilirubin Measurement
The bilirubin is bound to glucuronide to form conjugated bilirubin (direct bilirubin). Direct Bilirubin measurement is accomplished by a colorimetric method. Direct Bilirubin in biological fluids reacts with sulfanilic acid at acidic pH to produce a red colored complex. The optical density of produced color has a direct relationship with Direct Bilirubin concentration in the solution.
What it is for
Source: National Cancer Institute, NCI Thesaurus 26.10d, C64481. Unmodified NCI definition, CC BY 4.0. Source identity and classification checked automatically on 2026-10-30.
Limitations
Terminology reference for a laboratory procedure. The source definition does not establish routine clinical availability, validated specimen types, reference intervals, product authorization or suitability for an individual. Consult the performing laboratory for its validated method and interpretation.
Also known as
- Direct Bilirubin Measurement
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