BILIRUBIN DIRECT

Test Code

LAB52

Quest Code

285

CPT Codes
82248

Preferred Specimen

1 mL serum
*Stat to Mercy lab, see link below for specimen requirement

Minimum Volume

0.5 mL

Other Acceptable Specimens

Plasma collected in: Lithium heparin (green-top) tube or sodium heparin (green-top) tube • Serum transferred to an amber transport vial

Instructions

Protect from light by wrapping a spun SST in foil or transferring serum/plasma to an amber transport vial. Avoid hemolysis.

Transport Container

Spun serum separator tube (SST) - protected from light

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 24 hours*
Refrigerated: 72 hours*
Frozen: 90 days*
*if protected from light

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Hemolysis • Anticoagulants other than heparin

Methodology
Spectrophotometry (SP)

Setup Schedule

Daily

Report Available

1 day

Reference Range

≤0.2 mg/dL

Clinical Significance

Measurement of the levels of bilirubin is used in the diagnosis and treatment of liver, hemolytic, hematologic, and metabolic disorders, including hepatitis and gall bladder obstruction. The assessment of direct bilirubin is helpful in the differentiation of hepatic disorders. The increase in total bilirubin associated with obstructive jaundice is primarily due to the direct (conjugated) fraction. Both direct and indirect bilirubin are increased in the serum with hepatitis.

Performing Laboratory

Quest Diagnostics-Lenexa

10101 Renner Blvd

Lenexa, KS 66219-9752

Additional Information
Mercy Labs Specimen Container Requirement

Last Updated: September 15, 2023

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.