Skip to content

Hemostasis Thrombosis Fibrinolysis

Affinity Biologicals, Inc. is a primary manufacturer of products used worldwide in thrombosis and hemostasis research and diagnostics. Our products include an extensive line of antibodies, conjugates, antibody pairs for immunoassay of human and animal analytes, the VisuLize line of complete ELISA kits, and a full line of human plasma products including VisuDep Immune-Depleted Factor-Deficient Plasmas, VisuCal Calibrator Plasma and VisuCon Control Plasmas. Services include protein purification, antibody production, assay development, custom manufacturing including custom lyophilization and proficiency testing materials.

Browse Product Listing

Try our new ELISA Kit

VisuLize Factor VIII Antigen PLUS Kit

A Complete Factor VIII Antigen ELISA kit that measures human Factor VIII antigen levels in human Factor VIII, therapeutic Factor VIII concentrates and recombinant Factor VIII preparations.

Factor VIII Antigen PLUS Kit web

Company News

ISTH 2021

Affinity Biologicals and Precision BioLogic are both presenting e-posters at the virtual event. Posters are also available for viewing and download from our websites:

Comparative Recovery of FVIII Antigen with Various FVIII Therapeutic Concentrates Using an Improved 2nd Generation ELISA Kit – Affinity Biologicals

 View Poster

Comparison of a Chromogenic vs. APTT-based Factor VIII Activity Assay in the Recovery of a Pegylated Factor VIII Replacement Therapy in Plasma Samples – Precision BioLogic

PBI thumb 1

View Poster

The Impact of Inactive FVIII Antigen in Factor VIII Deficient Plasma on the Measurement of FVIII Inhibitors – Precision Biologic

PBI thumb 2

 View Poster

Validation of a New Kit for the Quantitative Determination of Chromogenic Factor IX Activity – Precision BioLogic

PBI thumb 3

View Poster