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FACTOR 8 ACTIVITY, PLASMA
Test CodeLAB306
CPT Codes
85240, LOiNC:3209-4
Preferred Specimen
One 3 mL blue top tube
Pediatric: One 1.8 mL pediatric blue top tube
Pediatric: One 1.8 mL pediatric blue top tube
Minimum Volume
1 mL Plasma
Instructions
Tube must be filled to etched line to perform testing.
Samples must be centrifuged at 3000 rpm for 10 minutes or using a high-speed centrifuge. Platelet poor plasma should be separated into 1 ml aliquots. Samples should be frozen within one hour (best practice), however samples stable for 4 hours. Samples must remain frozen during transport. Any samples that are received thawed are not suitable for testing.
Samples must be centrifuged at 3000 rpm for 10 minutes or using a high-speed centrifuge. Platelet poor plasma should be separated into 1 ml aliquots. Samples should be frozen within one hour (best practice), however samples stable for 4 hours. Samples must remain frozen during transport. Any samples that are received thawed are not suitable for testing.
Transport Temperature
Frozen (two 1 mL plasma aliquots)
Specimen Stability
Ambient: 4 hours if cap has not been removed or punctured
Frozen: 6 months (-70C)
Frozen: 6 months (-70C)
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Clotted specimen, underfilled tube, or gross hemolysis.
Methodology
Activiated partial thromboplastin clot-based assay on ACL TOP.
Setup Schedule
Monday-Friday
STAT requests must be approved by pathologist. Call 74230 to inquire.
STAT requests must be approved by pathologist. Call 74230 to inquire.
Reference Range
50-150%
Performing Laboratory
West Virginia University Hospital, Inc.
