CTK Biotech (San Diego, California) develops and manufactures innovative immunodiagnostic equipment and point-of-care diagnostic test kits for in-vitro diagnostic use.

They have their own production of recombinant antigens and antibodies for their test kits, allowing them to have excellent control over their product quality, supply and consistency. Such capabilities in raw material , generation & purification allow them to have an edge over their competitors in the IVD market.