Labels:text | screenshot | black | black and white OCR: ation; it is Basal hormone levels yield much infor therefore important to measure directly ns of radioimmunoassay, serum concentratic H, FSH, prolactin, TSH, thyroxine (T4), cortisol, omen (Fig. testosterone in men, and oestradiol in v 2.20). See also: · Hormone Assay Techniques