Factor VIII, Activity

Useful For:
Bleeding disorders may be due to inherited or acquired deficiencies of a clotting factor.

Methodology: Coagulation

Specimen Requirements: 1 blue-top (citrate) tube (minumum: the remaining platelet poor plasma separated from 2.7 mL whole blood). Centrifuge blue-top immediately. Separate plasma and FREEZE immediately. Send specimen frozen in plastic vial.

Tube must be filled to capacity.
If using a butterfly collection set, fill a 1 mL waste tube prior to blue-top. This ensures full blood volume in blue-top.
Draw specimen by vacuum. Do not over-fill the tube.
Hemolyzed specimens are not acceptable.
If collecting multiple factor studies, draw each factor in separate tube.

Analytical Time: 3 days

Days Set Up: Monday through Sunday

CPT Information:
85240 –

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