The below is information regarding the detection of metabolites of Tamoxifen (Nolvadex ), Clomiphene (Clomid), Letrozole , Cyclofenil and finally HCG .



Screening for Tamoxifen, Clomiphene and Cyclofenil in Doping Analysis


http://proceedings.live-record.de/pr...9_pdf/9_53.pdf

"After a single oral administration of 40 mg tamoxifene and 100 mg clomiphene
tamoxifene: over 35 days
clomiphene: about 9 days""




Screening on Letrozole and its Metabolite in Doping Analysis


http://proceedings.live-record.de/pr...pdf/12_203.pdf

"After a single oral administration of 5 mg letrozole (Femara) ... the main metabolite of letrozole (bis-4-cyanophenylmethanol) is detectable in the screening procedure of anabolic steroids for more than 8 days, whereas letrozole itself is only detectable for up to 2 days."



Detection of Human Chorionic Gonadotropin in Urine by two Different Immunoassays


(I am still trying to validate this...But have no reason to assume its false)


"After injection of 5000 IU Pregnyl
HCG: goes back to below illegal levels for males (10 IU) in about 7-10 days"



Immunoprocedures for detecting human chorionic gonadotropin: clinical aspects and doping control


http://www.clinchem.org/cgi/content/abstract/43/7/1293

"After injection of hCG (10 000 IU of PregnylŪ; Organon), above-normal concentrations of hCG can be detected in serum and urine for 7–11 days"