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Test Name:Porcine FVIII Nijmegen Bethesda assay
Test Number:994
Collect:1.5 mL Na Citrate plasma - lt blue
Minimum Volume:0.5 mL
Note: this volume does not allow for repeat testing
Container:LabCorp screw-capped purple frozen plastic transport tube labelled as Na Citrate plasma
Processing:Spin, separate and freeze.
Transport/Stability:Frozen (strict)
Alternate Names:MSO
LAB994
Performing Lab:Esoterix Coagulation Lab (301608) via LabCorp (504474); R-NX
Days Set Up:1x / week variable day
Expected TAT:5 days
Ref. Ranges:<0.6 BU/mL
Collection/
Processing Details:
Useful for:
This assay is used to quantitate the titer of FVIII-specific inhibitors to porcine FVIII concentrate.


Blood should be collected in a blue-top tube containing 3.2% buffered sodium citrate. Evacuated collection tubes must be filled to completion to ensure a proper blood-to- anticoagulant ratio. The sample should be mixed immediately by gentle inversion at least six times to ensure adequate mixing of the anticoagulant with the blood.

Method:One-stage clotting, Nijmegen-modified Bethesda assay
CPT Codes:85335
Date Created:05/24/2019
Revised Date:05/24/2019