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Bilirubin - total, serum
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Test Name:
Bilirubin - total, serum
Test Code(s):

Age

Use Test Code

0 – 6 days

NBIL

7 – 30 days

NBILA

31 days – 5 mos less a day

TBILA

≥ 5 mos

TBIL


Collection Device/Tube Type:
5 mL blood - gold top serum separator tube (gel)
Submission Requirements:
1 mL serum - Protect from light

Frequency of Testing:
Daily
Reference Range:

Age

Bilirubin (umol/L)

9 days – Adult

< 20


Comments:
Refer to:  Province-wide Testing for Biliary Atresia (Lab Bulletin, 28 November 2013)

NOTES:

For children aged 7 days, to 5 months-less-a-day, having a total or neonatal bilirubin result greater than 20 umol/L, direct (conjugated) bilirubin and percentage of direct (conjugated) bilirubin are reported

The following comment is appended to the results when the percentage of direct (conjugated) bilirubin is greater than or equal to 20%:

"In infants direct (conjugated) hyperbilirubinemia (the direct [conjugated] bilirubin fraction of bilirubin greater than or equal to 20% of the total or neonatal bilirubin) is pathologic.  Prompt evaluation is necessary  especially to assess for Biliary Atresia.  Consider referral to pediatric gastroenterologist."

Last Reviewed:
21 August 2017

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