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
Infant:
Premature:
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
Performance
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