Bilirubin, Direct : 285

Test Code

BILDAU or 285

Alias/See Also

Conjugated Bilirubin

CPT Codes
82248

Instructions

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

Transport Container

Preferred Specimen
1 mL serum

Alternative Specimens
Plasma from: Lithium heparin (green-top) tube or Sodium heparin (green-top) tube

Minium Volume
0.5 mL

Transport Temperature

Room temperature.

Specimen Stability

If protected from light:
Room temperature: 24 hours; Refrigerated: 72 hours; Frozen: 90 days

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

Hemolysis, Anticoagulants other than heparin

Methodology
Spectrophotometry

Setup Schedule

Sunday - Saturday

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
med fusion

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.