| Within-and between-subjet biological variations of follitropin, lutropin, testesterone, and sex-binding globulin in men, Valero-Politi J, Fuentes-Arderiu X, 1993, Clin Chem, 39, 1723-5 | 10.9 | 21.3 | Males | Healthy (excl pregnant) | Serum |
| Within-and between-subjet biological variations of follitropin, lutropin, testesterone, and sex-binding globulin in men, Valero-Politi J, Fuentes-Arderiu X, 1993, Clin Chem, 39, 1723-5 | 17.3 | 28.8 | Males | Healthy (excl pregnant) | Salivary |
| Testosterone, free testosterone and free androgen index in women: reference intervals, biological variation and diagnostic value in polycystic ovary syndrome, Bui HN, Sluss PM, Hayes FJ, Blincko S, Knol DL, Blankestein MA and Heijboer AC, 2015, Clin Chim Acta, 450, 227-32 | | | Females | 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 | 12.0 | 17.0 | 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 | 9.3 | 16.5 | Males | Healthy (excl pregnant) | Serum |
| The Biological Variation of Testosterone and Sex Hormone-Binding Globulin (SHBG) in Polycystic Ovarian Syndrome: Implications for SHBG as a Surrogate Marker of Insulin Resistance, Jayagopal V, Kilpatrick ES, Jennings PE, Hepburn DA and Atkin SL, 2003, J Clin Endocrinol Metab, 88(4), 1528-33 | 15.1 | 83.4 | Females | Healthy (excl pregnant) | Serum |
| The significance of biological variation in the diagnosis of testosterone deficiency, and consideration of the relevance of total, free and bioavailable testosterone determinations, Collier CP, Morales A, Clark A, Lam M, Wynne-Edwards K and Black A, 2010, J Urol, 183, 2294-9 | 17.6 | 33.9 | Males | Healthy (excl pregnant) | Unknown |
| 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 | 9.2 | | 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 | 25.0 | | Males | Healthy (excl pregnant) | 24 Hour Urine |
| 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 | 11.8 | | Males | Healthy (excl pregnant) | Serum |
| The significance of biological variation in the diagnosis of testosterone deficiency, and consideration of the relevance of total, free and bioavailable testosterone determinations, Collier CP, Morales A, Clark A, Lam M, Wynne-Edwards K and Black A, 2010, J Urol, 183, 2294-9 | 18.7 | 33.6 | Males | Healthy (excl pregnant) | Unknown |
| Quality goals for hormone testing, Ricós C and Arbós MA, 1990, Ann Clin Biochem, 27, 353-8 | 8.3 | 18.0 | 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 | 11.0 | 17.5 | Males | Healthy (excl pregnant) | Serum |
| The Biological Variation of Testosterone and Sex Hormone-Binding Globulin (SHBG) in Polycystic Ovarian Syndrome: Implications for SHBG as a Surrogate Marker of Insulin Resistance, Jayagopal V, Kilpatrick ES, Jennings PE, Hepburn DA and Atkin SL, 2003, J Clin Endocrinol Metab, 88(4), 1528-33 | 30.7 | 64.1 | Females | Non-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 | 24.2 | 26.1 | Males | Healthy (excl pregnant) | Serum |
| The significance of biological variation in the diagnosis of testosterone deficiency, and consideration of the relevance of total, free and bioavailable testosterone determinations, Collier CP, Morales A, Clark A, Lam M, Wynne-Edwards K and Black A, 2010, J Urol, 183, 2294-9 | 12.9 | 36.5 | Males | Healthy (excl pregnant) | Unknown |
| Testosterone, free testosterone and free androgen index in women: reference intervals, biological variation and diagnostic value in polycystic ovary syndrome, Bui HN, Sluss PM, Hayes FJ, Blincko S, Knol DL, Blankestein MA and Heijboer AC, 2015, Clin Chim Acta, 450, 227-32 | | | Females | 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 | 8.3 | 26.4 | Males | Healthy (excl pregnant) | Serum |
