Not sure if any of this helps you but a few things I dug up. The first study might give you some idea on what it is they are looking for and then possibly you can back into what you are looking for. Also look at other studies cited in the bibliography. I'd also hit a university library and get the librarian to show you how to search for more recent articles that have cited this and other prominent studies in the field. This is a tough way to go but by learning as much as you can about it you place yourself in a good position.
# Kicman, A.T., Cowan, D.A. (1992). Peptide hormones and sport: misuse and detection. British Medical Bulletin, 48, 496-517.
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In 1989 the Medical Commission of the International Olympic Committee (IOC) introduced the new doping class of 'peptide hormones and analogues,' which include human chorionic gonadotrophin (hCG) and related compounds, adrenocorticotrophic hormone (ACTH), human growth hormone (hGH), all the releasing factors of these listed hormones, and erythropoietin (EPO). Currently there are no IOC approved definitive tests for these hormones but highly specific immunoassays combined with suitable purification techniques may be sufficient to warrant IOC approval. The importance of measuring hCG and luteinizing hormone (LH) in the control of testosterone misuse is discussed and strategies for the detection of hGH, ACTH and EPO administration are suggested.
http://www.nature.com/news/2004/040823/pf/nbt0904-1069_pf.html
"The International Olympic Committee (IOC) is on a mission to clean up the image of elite athletes. More Athens Olympians were tested for more substances more often than ever before. Several biotech drugs were among those targeted (Table 1): erythropoietin (EPO), which figured in the ejection of several Olympic hopefuls before the games even started, and recombinant human growth hormone (hGH), for which athletes competing at Athens were the first to be tested. "
"A test for hGH has proven more elusive, as all marketed forms but the very first one (Genentech's Protropin, which contains an N-terminal methionine residue) are identical to the naturally occurring hormone. The anti-doping committee is keeping the details of a newly developed test under wraps and can't say exactly when it will be put into practice (samples collected from athletes in Athens have been stored for later testing). However, some have speculated that indirect effects of hGH on the level of downstream hormones or a skewing of the ratio of naturally occurring growth hormone species might form the basis of the test."