title: A radioimmuno-chromatographic scanning method for the analysis of testosterone conjugates in urine and serum.
abstract: A method for the analysis of testosterone (and 5alpha-dihydrotestosterone) conjugates in human serum and urine samples is described. The samples were grought to pH 1 and extracted with a diethyl ether-methanol mixture. After evaporation the residues were run in a thin-layer chromatography system, individual samples' paths were cut into 1-cm long pieces and eluted with methanol. The methanol was evaporated and the residue subjected to acid hydrolysis. The released steroid was extracted by diethyl ether and measured by radioimmunoassay. The methodology described represents a new approach to the qualitative and quantitative study of steroid conjugates in serum and urine, and can easily be applied to the study of steroid conjugates in other biological mateiral.
mesh_terms: D002855:Chromatography, Thin Layer; D013196:Dihydrotestosterone / Q000031:analogs & derivatives* / Q000097:blood / Q000652:urine; D005260:Female; D006801:Humans; D008297:Male; D011863:Radioimmunoassay / Q000379:methods*; D011877:Radionuclide Imaging; D013739:Testosterone / Q000031:analogs & derivatives* / Q000097:blood / Q000652:urine
chemical_list: D013196:Dihydrotestosterone; D013739:Testosterone