Figure 11: FSH radioimmunoassay and radioligand assays. A. FSH radioimmunoassay using 125I-hFSH tracer and FSH dimer-specific polyclonal antibody AFP005, diluted 1:10,000. FSH glycoform concentrations based on SEC peak areas. B. FSH radioligand receptor assay employing 125I-eFSH tracer and rat testis receptors. FSH glycoform concentrations corrected for Western blot results (Figure 10G).