Elmi Laboratories

Bilirubin - Direct (Conjugated) blood test

Normal Reference Range

0 – 6 µmol/L

Test Information

Jaundice is characterised by elevated blood bilirubin levels. In conjunction with other liver function tests, it is used to determine the degree of any intrahepatic or extrahepatic blockage. It is a sign of cholestasis. Raised ALP and GGT, both of which indicate cholestasis, are frequently found in conjunction with raised direct bilirubin. Neonatal kernicterus is caused by the buildup of free, unconjugated bilirubin in areas of the brain that have crossed the blood-brain barrier. This irreversible damage to those areas manifests as a variety of neurological impairments, seizures, aberrant reflexes, and abnormal eye movements.

Clinical Indications

A patient who exhibits signs of jaundice, has a history of binge drinking alcohol, is suspected of having drug toxicity, or has been exposed to hepatitis viruses is indicated.

Sample Required

5mL serum sample blood tube is required for Bilirubin blood test

Min. sample volume


Special Instructions and Precautions

Not applicable

Time Limits For Retrospective Testing

24 hrs

Any factors affecting the test

Not applicable

Turnaround Time

4 hrs

Referral centre (if applicable)

Not applicable

Test Code


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