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Chromogenic Factor IX

Diagnostic Kits

CRYOcheck™ Chromogenic Factor IX is a chromogenic assay for the determination of factor IX activity in human plasma. It is intended to be used as an aid in the management of hemophilia B in individuals aged two years or older. With a limit of quantification of 0.5% FIX activity and a test range of 0–200% FIX using one standard curve*, CRYOcheck Chromogenic Factor IX provides unsurpassed assurance in results, especially in cases of patients with severe hemophilia B.

With the ability to store thawed reagents at 2 to 8°C for up to 48 hours, or refreeze for up to one month, labs of all sizes can meet their testing requirements while minimizing wastage.

  • Convenient frozen format ready to use within minutes, no reconstitution errors
  • Intended for use on automated coagulation analyzers
  • Only one calibration curve used for entire measuring range of 0–200%*
  • 24-hour on-board stability
  • Excellent precision at low FIX activity

* may vary based on the instrumentation in use


Storage and Shelf Life


below -70°C




3 years after manufacturing date

Available Formats

Cat # Format

4 x 0.75 mL (Reagent 1)

4 x 2.3 mL (Reagent 2)

4 x 1.0 mL (Reagent 3)

4 x 10.0 mL (Diluent Buffer)

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


Issues in Factor IX Activity Testing

Learn about current issues in FIX activity testing with Julie Tange, Principal Developer, Hematopathology – Special Coagulation Laboratory, Department of Laboratory Medicine, Mayo Clinic, and Ian Burns, Senior Product Manager, Precision BioLogic.

Watch now
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