Company Information

Affinity Biologicals Inc. (Affinity) was founded in 1987 by the principals Hugh and Patricia Hoogendoorn.  With a strong background in hemostasis research and a focus on reagent development, Affinity has become a primary manufacturer of more than 250 reagents and kits used in hemostasis and thrombosis research and diagnostics.  Our product line includes: coagulation related antibodies, matched-pair antibody sets for ELISA, depleted/deficient plasmas, protease inhibitor deficient plasmas, the VisuLize line of complete ELISA kits and the VisuCon & VisuCal coagulation controls and calibration plasmas.  All Affinity Biologicals products are manufactured in our Ancaster, ON (Canada) facility, products are sold direct in North America and world wide through a network of branded and private-label distributors.


Affinity has an ISO 13485:2003 registered Quality System and is a licensed medical device manufacturer recognized by the US Food and Drug Administration, Health Canada and European regulatory authorities (CE Mark).

Over the years, Affinity has built key affiliations with:

  • The Thrombosis & Atherosclerosis Research Insititute (TaARI)
  • McMaster University
  • Queen’s University
  • Hemostasis Reference Laboratory