Bilirubin (Direct)

Testing Laboratories

Waitematā | Northshore Hospital
Waitematā | Waitakere Hospital

Department

Chemical Pathology

Delphic Registration Code (Alpha Code)

SDBI

Test Code (Numeric Code)

0113

Laboratory Handling

Phlebotomy

Collect neonatal or baby bilirubin specimens in amber tubes to protect form light. Protect neonatal specimens, urine & other specimens from light

Sample Stability

12 hours

Associated Tests

• Bilirubin (Total)

Synonyms

Conjugated Bilirubin

Turnaround Time

2 hours

Available 24 hours

Specimen Type

• Plasma
• Serum

Specimen Requirements

Tube/Container Type:

Preferred

• Lithium Heparin - Non-gel (Green Cap)

Acceptable

• Plain (Red Top)
• SST II (Gold Cap)

Preferred Sample Volume (ml)

4

Minimum Sample Volume (ml)

1

No of Samples Required

1

Paediatric Specimen Requirements

Tube/Container Type:

Preferred

• SST(Microtainer)

Acceptable

• Heparin (Microtainer)
• Plain(Microtainer)

Minimum Sample Volume (ml)

0.4

Aliquot Instructions

Sample Type

• Serum
• Plasma

Minimum Volume (ml)

0.5

Transport to Lab

Chilled (2 - 8 degrees Celsius)

Additional Referral/Aliquot Information

Protect from light

Test Method

Principle: Enzymatic
Reagents: Siemens Atellica CH Enzymatic Creatinine
Analyser: Siemens Atellica Solution (NSH) and Atellica CI (WTH)

Limitations / Interference

For patients on eltrombopag therapy, use of Siemens Atellica Solution (NSH) and CI (WTH) methods is not recommended.

ADDITIONAL INFORMATION:
Unconjugated bilirubin is a calculated value.
Total bilirubin – direct bilirubin = indirect bilirubin

Resources

• North Shore Hospital Biochemistry Laboratory Measurement of Uncertainty (MU)

Contact Information