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Bilirubin (Conjugated)

Alias: N/A

Discipline: Clinical Chemistry

Test information: In serum or plasma the terms “indirect” and “direct” bilirubin are often used to refer to unconjugated and conjugated bilirubin respectively; the difference being that the indirect fraction requires a solubiliser (originally methanol) to effect a reaction whereas the direct fraction reacts without a facilitating agent.

Specimen Type(s)
  • Blood;
Other Acceptable Specimen Type(s)
Specimen Container - Adult
  • Gold Top SST BD;
Specimen Container - Paediatric
  • Light Green Top Microtainer BD;
  • N/A;
Part of a test profile?
Volume (min) of sample to be sent to laboratory
4 ml
Patient Preparation, Sample Handling and Transport
Used in ? Gilberts cases and paediatrics
Maximum add on time
24 hours
Units and Reference Ranges / Interpretation
RR for Males and Females
less than 15days - 5.7 - 12.1 umol/L
15days to less than 1yr - 0.8 - 5.2 umol/L
1yr to less than 9yrs - 0.8 - 3.4 umol/L
9yrs to less than 13yrs - 0.8 5.0 umol/L
RR for Female
13yrs to less than 19yrs - 1.7 - 6.7 umol/L
RR for Male
13yrs to less than 19yrs - 1.9 - 7.1 umol/L
RR for Males and Females
19yrs & above - < 6.8 umol/L
UKAS number
UKAS accredited test?

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Last updated: 03-05-2024