Validity of radioimmunological methods for determining free testosterone in serum Annette Gruschke, M.D., Herbert Kuhl, Ph.D. Fertility and Sterility Volume 76, Issue 3, Pages 576-582 (September 2001) DOI: 10.1016/S0015-0282(01)01939-2
Figure 1 Comparison of the serum concentrations of free T in various groups of women as determined by means of an ultrafiltration technique and two commercially available radioimmunoassays (RIA DPC and RIA DSL). Hatched columns represent ultrafiltration; solid columns represent RIA DPC; and open columns represent RIA DSL. OC = women using oral contraceptives, MP = menopausal women, NW = normal healthy women, AC = patients with acne and normal total T, HI = hirsute women with normal total T, PR = pregnant women, HA = patients with hyperandrogenemia, AGS = patients with adrenogenital syndrome. Gruschke. Validity of free testosterone determination. Fertil Steril 2001. Fertility and Sterility 2001 76, 576-582DOI: (10.1016/S0015-0282(01)01939-2)