| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
FACTOR 5 ACTIVITY, PLASMA
MessageThis test is performed to assess functional factor 5 as seen with an increased PT or APTT (bleeding problem). For clotting disorders,
please refer to Factor V Mutation , see order code FAVL FACTOR 5 MUTATION (LEIDEN).
please refer to Factor V Mutation , see order code FAVL FACTOR 5 MUTATION (LEIDEN).
Test Code
LAB304
CPT Codes
85220, LOiNC:3193-0
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
Prothrombin clot-based assay on ACL-TOP
Setup Schedule
Monday-Friday
Reference Range
62-139%
Performing Laboratory
West Virginia University Hospital, Inc.
