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Factor VIII Inhibitor Kit

Diagnostic Kits

The CRYOcheck™ Factor VIII Inhibitor Kit contains standardized components and a validated procedure to prepare patient samples for performing a modified Nijmegen-Bethesda assay (MNBA) as per the U.S. Centers for Disease Control and Prevention (CDC) recommendation.*

It is ideal for laboratories seeking to standardize sample preparation to limit variability in their MNBA.

  • Each kit contains five vial sets, including positive and negative FVIII inhibitor controls
  • Excellent repeatability and reproducibility; suitable for multi-center clinical studies
  • Excellent linearity across a broad reportable range
  • Convenient frozen format—ready to use within minutes, no reconstitution errors

* Miller CH, Platt SJ, Rice AS, Kelly F, Soucie JM, the Hemophilia Inhibitor Research Study Investigators. Validation of Nijmegen-Bethesda assay modifications to allow inhibitor measurement during replacement therapy and facilitate inhibitor surveillance. J Thromb Haemost 2012; 10: 1055–1061.


Storage and Shelf Life


below -70°C




3 years after manufacturing date

Available Formats

Cat # Format

10 x 1.5 mL (IB-PNP)

10 x 1.5 mL (IB-BSA)

5 x 0.5 mL (Neg Control)

5 x 0.5 mL (Pos Control)

US, Canada, EU, UK, Australia, and New Zealand


Update on Factor VIII Inhibitor Testing

Learn about FVIII inhibitor testing with Connie H. Miller PhD, former director of the CDC Hemostasis Lab, and Ian Burns, Senior Product Manager, Precision BioLogic.

Watch now
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