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Test Code TBIL Bilirubin, Total LAB50

Test Method

Timed Endpoint, Diazo; Beckman DXC600

Specimen Requirement

0.5 mL plasma or serum is required.

Additional Specimen Collection Information

Collect blood in a lithium heparin, green-top or red-top tube.
PST and SST (gel tubes) are acceptable. Serum or plasma should be
separated from contact with the cells within 2 hours of collection.
Specimens not centrifuged within 4 hours of collection may be
rejected. Refrigerate the specimen if unable to assay within 8
hours of collection. Hemolyzed specimens are not acceptable.
Samples with >3+ lipemia must be cleared prior to analysis.
Protect from light.

Reference Values

≥ 5 Days of Age:

  • Total: 0.3-1.2 mg/dL



Values in premature infants may be
higher than in full term infants and may reach peak concentrations
at later times.

Full Term:

  • Total: Birth-24 hours: < 5.8 mg/dL
  • Total: 24-48 hours: < 8.2 mg/dL
  • Total: 2-5 days: < 11.7 mg/dL
  • Critical Value: Total Bilirubin (Infant-1
    Month): ≥ 16.0 mg/dL


Testing is performed Monday through Sunday.

Routine orders: Typically completed within 4 hours after the
specimen arrives at the testing site.

Expedite orders: Typically completed within 1 hour after the
specimen arrives at the testing site.

STAT orders: Typically completed within 30 minutes after
the specimen arrives at the testing site.

Useful For

Assessing liver function

Evaluating a wide range of diseases affecting the production,
uptake, storage, metabolism, or excretion of bilirubin

Monitoring the efficacy of neonatal phototherapy


LOINC Code Information

1975-2 Bilirubin.Total [Mass/Volume] In Serum Or Plasma

CPT Code Information

82247 Chemistry: Bilirubin; total

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