http://www.eje-online.org/content/131/2/173.abstract Diurnal rhythm of testosterone induced by human chorionic gonadotrophin (hCG) therapy in isolated hypogonadotrophic hypogonadism: a comparison between subcutaneous and intramuscular hCG administration T Hugh Jones, Joe F Darne and Hugh HG McGarrigle Abstract Jones TH, Darne JF, McGarrigle HHG. Diurnal rhythm of testosterone induced by human chorionic ...