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Test Code TBIL Bilirubin, Total, LAB50


Jendrassik-Grof End point with Sample Blank

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements


Preferred: Green-top (lithium heparin) tube

Acceptable: Gold-top serum gel tube, plain red-top tube, or lavender-top (EDTA) tube

Specimen Volume: 0.1 mL of plasma or serum

Stability: Specimens can be stored at 2 – 8°C for 5 days. For longer storage, samples may be

                frozen at -20°C or colder for up to 6 months.

Collection Instructions: Bilirubin is photosensitive. Specimen must be protected from light.

Note: Label specimen appropriately (plasma)

Reference Values

Cord blood: 0-2.5 mg/dL
0-24 hours: 0-6.0 mg/dL
24-48 hours: 0-7.5 mg/dL

3-5 days: 0-12.0 mg/dL
6-10 days: 0-10.0 mg/dL
11-15 days: 0-8.0 mg/dL
16-20 days: 0-6.0 mg/dL
21-25 days: 0-4.0 mg/dL
26-30 days: 0-2.0 mg/dL
≥1 month: 0.2-1.0 mg/dL

Critical value

0-30 days: >16.0 mg/dL

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding


Useful For

Measurements of bilirubin are used in the diagnosis of liver disease, in the detection of hemolytic anemia, and to evaluate degrees of jaundice.