Factor VII Activity

Factor 7, Factor VII, FVII, UOW1286

Factor 7 activity is used for diagnosing congenital or acquired factor VII deficiency. Acquired deficiencies include liver disease, oral anticoagulant therapy (warfarin) or vitamin K deficiency.

3 mL or 5 mL Light Blue Citrate Tube

Blood

Entire Specimen

MUST PROCESS WITHIN 4 HOURS OF COLLECTION
Platelet poor Coag Citrate Specimen processing:
1. Gently invert tube 2-3 times prior to placing in Centrifuge
2. Centrifuge Citrate whole blood at 4500 rpm for 10 minutes
3. Carefully pipette plasma, avoiding the platelet/buffy coat into a plastic vial
4. Centrifuge plasma at 4500 rpm for 10 minutes
5. Pipette the plasma to a plastic vial, leaving the bottom 0.25 mL undisturbed
6. Freeze plasma immediately and transport frozen. 

1 mL

Patients on bivalirudin (Angiomax), dabigatran (Pradaxa), argatroban (Novastan), rivaroxaban (Xarelto), apixaban (Eliquis), and edoxaban (Savaysa) may show prolonged clotting times. This may cause an under- estimation of the factor concentrations.

Coagulation (COAG)

Stago STA Clottable Factor assay

Report by end of next business day

Monday - Friday

85230

                                         Units: %
              Female                                        Male
Age                 Range                  Age                  Range
0-29d            35-150               0-29d             35-150
1m-2m         42-150               1m-2m          42-150
3m-5m         39-150               3m-5m          39-150
6m-                 50-150              6m-                  50-150

No

UW

3198-9