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Test Code Bilirubin,Total and Direct BILIRUBIN, T&D

Additional Codes

LAB182

Performing Laboratory

Porter Hospital Laboratory

Specimen Requirements

Specimen Type: Blood
Container/Tube: Tiger top, serum gel
Also Acceptable: Green top (Lithium Heparin)
Specimen Volume: Full tube, submit 0.5 mL 
Specimen Minimum Volume: 0.1 mL
Collection Instructions:
1. Send specimen in original tube.
2. Protect specimen from light.
3. If there is a delay in transport of >1 hour, centrifuge tube.
4. Centrifuged samples are stable for:

  • 7 days at 2-8 °C

Specimen Transport Temperature

Refrigerated

Test Classification and CPT Coding

See each component.

Test Schedule / Analytical Time / Test Priority / Turn Around Time

Daily / 24 Hours / Available STAT / Routine - 4 Hours

                                                          STAT - 60 Minutes

Normal Reference Values

DIRECT BILIRUBIN (CONJUGATED) 

0 up to 1 Years   <0.3 mg/dL
1 Years to 18 Years   ≤0.3 mg/dL
18 Years to Unspecified   ≤0.3 mg/dL

 

TOTAL BILIRUBIN 

0 up to 1 months   0.6-10.8 mg/dL
1 months up to 12 years   ≤0.7 mg/dL
12 years up to 18 years   ≤0.8 mg/dL
18 years up to Unspecified   <1.4 mg/dL

 

Critical Values

*Expanded range as of 3/17/2025

DIRECT BILIRUBIN (CONJUGATED)

0 up to 1 Years* ≥1.0 mg/dL
1 Years to 18 Years* ≥1.0 mg/dL
18 Years to Unspecified >15.0 mg/dL

TOTAL BILIRUBIN 

>15.0 mg/dL

Additional Information

Includes the following tests: BILIRUBIN, TOTAL AND DIRECT