{"id":"testosterone-total","name":"Testosterone, Total","shortName":"Testosterone","aliases":["TESTOSTERONE, TOTAL, MALES (ADULT), IA","Total Testosterone","Testosterone, Serum","Testosterone","Testosterone, Total, Serum","Testosterone, Total, LC/MS","Testosterone, Total, MS","Testosterone, Total, Immunoassay","Testosterone (T)","Testosterone Total, Males (Adult)","Testosterone, Total, Males (Adult), Immunoassay","Testosterone, Total, Females or Children","Testosterone, Total, Women, Children, and Hypogonadal Males, LC/MS-MS","Testosterone by Immunoassay","Testosterone by Mass Spec","Male Testosterone","Serum Testosterone","Total T","Testosterona total","Testosteron"],"abbreviations":["Total T"],"loinc":[{"code":"2986-8","primary":true},{"code":"14913-8","primary":false},{"code":"105121-8","primary":false},{"code":"83116-4","primary":false},{"code":"83115-6","primary":false},{"code":"49041-7","primary":false}],"specimen":"serum","units":[{"ucum":"ng/dL","display":"ng/dL"},{"ucum":"nmol/L","display":"nmol/L"},{"ucum":"ng/mL","display":"ng/mL"},{"ucum":"pg/mL","display":"pg/mL"}],"referenceRanges":[{"population":"Men, 20+","low":264,"high":916,"unit":"ng/dL","unitDisplay":"ng/dL","note":"Harmonized range from healthy, non-obese men aged 19 to 39 (Travison 2017), which Labcorp applies to all men from age 20. Labs differ: ARUP lists age-specific limits of 300-1080 (18-39), 300-890 (40-59) and 300-720 (60 and older), and MedlinePlus gives 249-836 for ages 17-50 and 193-740 above 50. Levels tend to drift down with age, so a result near the low end can be usual for an older man.","sources":[{"title":"Testosterone, Total (test 004226)","url":"https://www.labcorp.com/tests/004226/testosterone-total","publisher":"Labcorp"},{"title":"Harmonized Reference Ranges for Circulating Testosterone Levels in Men of Four Cohort Studies in the United States and Europe","url":"https://pubmed.ncbi.nlm.nih.gov/28324103/","publisher":"Journal of Clinical Endocrinology & Metabolism","year":2017},{"title":"Testosterone (Adult Males or Individuals on Testosterone Hormone Therapy) (test 0070130)","url":"https://ltd.aruplab.com/Tests/Pub/0070130","publisher":"ARUP Laboratories"},{"title":"Testosterone (MedlinePlus Medical Encyclopedia)","url":"https://medlineplus.gov/ency/article/003707.htm","publisher":"MedlinePlus (National Library of Medicine)"}]},{"population":"Men, 18–19","low":150,"high":785,"unit":"ng/dL","unitDisplay":"ng/dL","note":"Labcorp immunoassay interval for ages 16-19, applied here to 18-19 because Labcorp's adult interval starts at 20. ARUP lists 300-1080 ng/dL for men 18-39.","sources":[{"title":"Testosterone, Total (test 004226)","url":"https://www.labcorp.com/tests/004226/testosterone-total","publisher":"Labcorp"}]},{"population":"Women, 18–59","low":9,"high":55,"unit":"ng/dL","unitDisplay":"ng/dL","note":"ARUP interval by mass spectrometry for women 18-59. Mass spectrometry is preferred for women because immunoassays are inaccurate at low levels. Other labs differ: Labcorp's mass-spectrometry test lists 10-55 (premenopausal) and 7-40 (postmenopausal). Labcorp's immunoassay test lists 13-71 at ages 20-30, 8-60 at 31-40, 4-50 at 41-60, 3-67 at 61-80 and 2-45 above 80. MedlinePlus gives 8.4-48.1 (ages 17-50) and 2.9-40.1 (over 50).","sources":[{"title":"Testosterone (Adult Females, Children, or Individuals on Testosterone-Suppressing Hormone Therapy) (test 0081058)","url":"https://ltd.aruplab.com/Tests/Pub/0081058","publisher":"ARUP Laboratories"},{"title":"Testosterone, Total, Women, Children, and Hypogonadal Males, LC/MS-MS (test 070001)","url":"https://www.labcorp.com/tests/070001/testosterone-total-women-children-and-hypogonadal-males-lc-ms-ms","publisher":"Labcorp"},{"title":"Testosterone, Total (test 004226)","url":"https://www.labcorp.com/tests/004226/testosterone-total","publisher":"Labcorp"},{"title":"Testosterone (MedlinePlus Medical Encyclopedia)","url":"https://medlineplus.gov/ency/article/003707.htm","publisher":"MedlinePlus (National Library of Medicine)"}]},{"population":"Women, 60+","low":5,"high":32,"unit":"ng/dL","unitDisplay":"ng/dL","note":"ARUP interval by mass spectrometry for women 60 and older (the same as its postmenopausal interval). Labcorp's mass-spectrometry test lists 7-40 for postmenopausal women.","sources":[{"title":"Testosterone (Adult Females, Children, or Individuals on Testosterone-Suppressing Hormone Therapy) (test 0081058)","url":"https://ltd.aruplab.com/Tests/Pub/0081058","publisher":"ARUP Laboratories"},{"title":"Testosterone, Total, Women, Children, and Hypogonadal Males, LC/MS-MS (test 070001)","url":"https://www.labcorp.com/tests/070001/testosterone-total-women-children-and-hypogonadal-males-lc-ms-ms","publisher":"Labcorp"},{"title":"Testosterone, Total (test 004226)","url":"https://www.labcorp.com/tests/004226/testosterone-total","publisher":"Labcorp"},{"title":"Testosterone (MedlinePlus Medical Encyclopedia)","url":"https://medlineplus.gov/ency/article/003707.htm","publisher":"MedlinePlus (National Library of Medicine)"}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"Counts all the testosterone in your blood, both free and protein-bound. Usual levels differ a lot by sex, age and the time of day of the draw.","url":"https://bloodtesttracker.com/markers/testosterone-total","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}