Back to "ELISA Kits"

Factor VIII Antigen Plus Kit


The VisuLize™ Factor VIII Antigen Plus Kit is an Enzyme Immunoassay for the quantitative determination of human Factor VIII (FVIII) antigen in plasma samples and FVIII concentrates using the double antibody enzyme linked immuno-sorbent assay (ELISA).


  • Rapid sandwich ELISA to measure human FVIII antigen (FVIII:Ag) in plasma samples and FVIII concentrates
  • Detection limit of 0.008 IU/mL (0.8 %) FVIII antigen
  • Under 3 hour total incubation time
  • FVIII antigen reported as IU/mL determined by comparison to a secondary standard that is traceable to the WHO International Standard for FVIII antigen
  • Includes normal and low controls
  • Mean lot-to-lot variability is 3.1%


Storage and Shelf Life


between 2°C and 8°C






Please inquire

Available Formats

Cat # Format

Pre-coated 96-well plate; 6x16 strip format

2 x Calibrator Plasma

2 x Control Plasma A

2 x Control Plasma B

1 x 50.0 mL 20X Wash Buffer Concentrate

3 x 20.0 mL Buffered Sample Diluent

1 x 12.0 mL Detecting Antibody

1 x 12.0 mL TMB Substrate

1 x 12.0 mL Stop Solution

For Research Use Only.

Comparative Recovery of FVIII:Ag with Various FVIII Therapeutic Concentrates

Presented at ISTH 2021

In this study, we assessed the FVIII recognition of various FVIII therapeutic products available, including those with PEG and dimeric Fc modifications, in both the 1st and 2nd generation FVIII antigen kits.

View the poster
Get a Quote

Ask Us

Our knowledgeable staff are here for you. If you have any technical questions about our products or techniques, don't hesitate to call or email us.