{"id":"progesterone","name":"Progesterone","shortName":"Progesterone","aliases":["Progesterone, Serum","P4","Progesterone, LC/MS/MS","Progesterone, Total","Progesterone Level","Progesterone, Luteal","Progesterona","Progesteron","Serum Progesterone","Progesterone Blood Test"],"abbreviations":["P4"],"loinc":[{"code":"2839-9","primary":true},{"code":"14890-8","primary":false},{"code":"83109-9","primary":false},{"code":"83110-7","primary":false}],"specimen":"serum-or-plasma","units":[{"ucum":"ng/mL","display":"ng/mL"},{"ucum":"nmol/L","display":"nmol/L"},{"ucum":"ng/dL","display":"ng/dL"},{"ucum":"pg/mL","display":"pg/mL"}],"referenceRanges":[{"population":"Men, 18+","low":null,"high":1,"unit":"ng/mL","unitDisplay":"ng/mL","note":"MedlinePlus lists male levels as under 1 ng/mL (3.18 nmol/L). The study above found upper limits of about 0.8 ng/mL (Schüring 2016). Ranges depend on the assay, so use the one on your report.","sources":[{"title":"Serum progesterone","url":"https://medlineplus.gov/ency/article/003714.htm","publisher":"MedlinePlus Medical Encyclopedia (National Library of Medicine)"},{"title":"Establishing Reference Intervals for Sex Hormones on the Analytical Platforms Advia Centaur and Immulite 2000XP","url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC4697344/","publisher":"Annals of Laboratory Medicine (Schüring et al.)","year":2016}]}],"review":{"status":"ai-draft","label":"AI-drafted. Awaiting verification","lastReviewed":"2026-10-03"},"summary":"A hormone made after ovulation that prepares the uterus for a pregnancy. A mid-luteal level is often used to check whether ovulation happened.","url":"https://bloodtesttracker.com/markers/progesterone","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}