| Biological day-to-day variation and daytime changes of testosterone, follitropin, lutropin and oestradiol-17β in healthy men, Ahokoski O, Virtanen A, Huupponene R, Scheinin H, Salminen E, Kairisto V, Irjala K, 1998, Clin Chem Lab Med, 36, 485-91 | 12.7 | 15.0 | Males | Healthy (excl pregnant) | Serum |
| Variation in levels of serum Inhibin B, testosterone, estradiol, luteinizing hormone, follicle-stimulating hormone and sex hormone binding globulin in monthly samples from healthy men during a 17-month period: possible effects of seasons, Andersson AM, Carlsen E, Petersen JH and Skakkebaek NE, 2003, J Clin Endocrinol Metab, 88, 932-937 | 15.0 | 13.0 | Males | Healthy (excl pregnant) | Serum |
| Biological day-to-day variation and daytime changes of testosterone, follitropin, lutropin and oestradiol-17β in healthy men, Ahokoski O, Virtanen A, Huupponene R, Scheinin H, Salminen E, Kairisto V, Irjala K, 1998, Clin Chem Lab Med, 36, 485-91 | 14.3 | 9.9 | Males | Healthy (excl pregnant) | Serum |
| Biological day-to-day variation and daytime changes of testosterone, follitropin, lutropin and oestradiol-17β in healthy men, Ahokoski O, Virtanen A, Huupponene R, Scheinin H, Salminen E, Kairisto V, Irjala K, 1998, Clin Chem Lab Med, 36, 485-91 | 15.5 | 18.5 | Males | Healthy (excl pregnant) | Serum |
| Serum testosterone, dihydrotestosterone and estradiol concentrations in older men self-reporting very good health: the healthy man study, Sartorius G, Spasevska S, Idan A et al, 2012, Clin Endocrinol, 77, 755-63 | 16.5 | | Males | Healthy (excl pregnant) | Serum |
| Within- and between-subject variation in, and associations between, serum concentrations and urinary excretion of testosterone and estradiol in Chinese men, Ooi LSM, Panesar NS, Masarei JRL, 1995, Clin Chim Acta, 236, 87-92 | 30.4 | | Males | Healthy (excl pregnant) | Urine |
| Quality goals for hormone testing, Ricós C and Arbós MA, 1990, Ann Clin Biochem, 27, 353-8 | 21.7 | 24.4 | Males | Healthy (excl pregnant) | Serum |
| Biological day-to-day variation and daytime changes of testosterone, follitropin, lutropin and oestradiol-17β in healthy men, Ahokoski O, Virtanen A, Huupponene R, Scheinin H, Salminen E, Kairisto V, Irjala K, 1998, Clin Chem Lab Med, 36, 485-91 | 27.4 | 41.6 | Males | Healthy (excl pregnant) | Serum |
| Within- and between-subject variation in, and associations between, serum concentrations and urinary excretion of testosterone and estradiol in Chinese men, Ooi LSM, Panesar NS, Masarei JRL, 1995, Clin Chim Acta, 236, 87-92 | 23.4 | | Males | Healthy (excl pregnant) | Serum |
| Quality goals for hormone testing, Ricós C and Arbós MA, 1990, Ann Clin Biochem, 27, 353-8 | 61.4 | 152.9 | Females | Healthy (excl pregnant) | Serum |
