Collection Notes: Grossly hemolyzed specimens will be rejected. Separate serum from cells within 1 hour of collection.
Clinical Utility: Elevations of direct (conjugated) bilirubin are typically the result of an obstruction within the liver or a source outside the liver; for example, gallstones or a tumor blocking the bile ducts.
Serum (1 mL)
Refrigerated 6 Days
Frozen 3 Months
Lithium heparin plasma (1 mL)
Refrigerated 6 Days
Frozen 3 Months
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