Factor Inhibitors (IX,II,V,VII,X,XI)

Profile or Test Panel
Method Clottable
Test Information Factor Inhibitors (IX,II,V,VII,X,XI) are very rare. This assay was developed and validated in our laboratory for inhibitors to FVIII. Factor activity will be performed before testing for inhibitors.
Sample Requirements Whole Blood:  3.2% Sodium Citrated (blue top)  OR
Frozen Plasma
Requested Volume Two 5 ml 3.2 sodium citrated (blue top) tubes as whole blood  OR
Frozen plasma in 4 X 1mL aliquots in plastic tubes 
Minimum Volume or Pediatric volume Frozen Plasma:  at least 0.5ml in 2 plastic tubes.  
Sample Information Whole blood is preferred for testing but if it is not possible to send whole blood tubes TO ARRIVE HERE WITHIN 3 HOURS of collection then send frozen plasma. To prepare plasma centrifuge blue top tubes at 1500g for 15 minutes and remove the plasma and centrifuge a second time at 1500g for an additional 15 minutes.  Aliquot approximately 1 ml of plasma into 4 plastic tubes, and freeze.  
Shipping Information

Whole Blood:  Send at ambient temperature (18-25C) and must be received within the lab in less than or equal to 3 hours after collection.
Frozen Plasma:  send on dry ice 

Send samples to:

Bloodworks Northwest
Attn: Hemostasis Laboratory
921 Terry Ave
Seattle, WA 98104

For additional information, please see Ordering Information

Requisition Form RFT- Hemostasis Reference Laboratory
Transaction Code 3220-09-  Factor IX Inhibitor Bethesda Titer- Human
3220-10-  Factor II Inhibitor Bethesda Titer- Human
3220-11-  Factor V Inhibitor Bethesda Titer- Human
3220-12-  Factor VII Inhibitor Bethesda Titer-  Human
3220-13-  Factor X Inhibitor Bethesda Titer- Human
3220-14-  Factor XI Inhibitor Bethesda Titer-  Human
CPT Codes 85335
Test Schedule as needed
Turn around Time (analytic time) 3 business days
Report/ Results Fax number required to receive report