Exogenous AAS inhibit endogenous testosterone production, and discontinuation of their use is often associated with a prolonged decrease in testosterone secretion ( The substances used in PCT are administered in the treatment of male hypogonadism unrelated to androgen abuse ( To restore endogenous testosterone, mainly aromatase inhibitors (AIs), selective estrogen receptor modulators (SERMs), and human chorionic gonadotropin (hCG) are used ( In the 2024 WADA Prohibited List ( Aromatase is an enzyme that converts testosterone to estradiol (the most potent estrogen form) and androstenedione to estrone ( The anti-estrogenic compounds mentioned in the WADA list can be divided into two groups: SERMs (bazedoxifene, clomiphene, cyclofenil, ospemifene, raloxifene, tamoxifen, and toremifene) and selective estrogen receptor degraders (SERDs), of which fulvestrant is a representative
SAMPLE ANALYSES Prior to analyses, whole milk samples (500 L) were homogenized and centrifuged at 905.6 x g for 10 minutes at 4 o C (Sorvall RT, Massachusetts, USA)
Jan 15, 2026 GHK-CU and AHK-CU look nearly identical on paper
However, most standard protocols using subcutaneous administration follow the lower dosing ranges outlined above
