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Test Code FT7 FACTOR 7 ACTIVITY, PLASMA

Methodology

Prothrombin clot-based assay on ACL-TOP

Performing Laboratory

West Virginia University Hospital, Inc.

Specimen Requirements

Collect: One 3 mL blue top tube

Pediatric: One 1.8 mL pediatric blue top tube

Stability:

   Ambient: Unstable

   Frozen: 6 months (-70°), freeze within one hour of collection

Required for Testing: 1 mL plasma

Collection Remarks: Tube must be filled to etched line to perform testing

 

Samples sent via courier: Samples must be centrifuged at 3000rpm for 10 minutes or using a high speed centrifuge. Platelet poor plasma should be aliquoted into 1mL aliquots. Freeze within one hour of collection. Samples must remain frozen during transport. Any samples that are received thawed are not suitable for testing.

 

Reject Due To: Clotted specimen, underfilled tube, or gross hemolysis.

Reference Values

50-129%

Day(s) Test Set Up

Monday-Friday

Test Classification and CPT Coding

CPT:85230     LOINC:3198-9

UML Lab Processing Instructions

Transport Temperature: Frozen (two 1 mL plasma aliquots)

Instructions: Samples must be centrifuged at 3000rpm for 10 minutes or using a high speed centrifuge. Platelet poor plasma should be aliquoted into 1mL aliquots. Freeze within one hour of collection. Samples must remain frozen during transport. Any samples that are received thawed are not suitable for testing.