Immunostics Inc. Immunostics Inc. is a manufacturer of quality diagnostic test kits and reagents. Our main emphasis is our hema-screen product line, both FOBT and iFOBT. Our patented collection system for iFOBT specimens allows multiple sample testing with only 1 cassette. Immunostics is the supplier of FOBT and iFOBT for the national colorectal screening programs in England, Scotland and Wales; we have also been chosen to supply the Ontario, Canada screening program with other provinces to follow.