Progesterone

Progesterone is a topic covered in the Davis's Lab & Diagnostic Tests.

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Synonym/Acronym:
N/A

Rationale
To assess ovarian function, assist in fertility work-ups, and monitor placental function during pregnancy related to disorders such as tumor, cysts, and threatened abortion.

Patient Preparation
There are no food, fluid, activity, or medication restrictions unless by medical direction.

Normal Findings
Method: Immunochemiluminometric assay (ICMA).

Hormonal StateConventional UnitsSI Units (Conventional Units × 3.18)
PrepubertalLess than 1 ng/mLLess than 3 nmol/L
Adult maleLess than 1 ng/mLLess than 3 nmol/L
Adult female
 Follicular phaseLess than 1 ng/mLLess than 3 nmol/L
 Luteal phase2–25 ng/mL6.4–79.5 nmol/L
Pregnancy, first trimester10–44 ng/mL31.8–140 nmol/L
Pregnancy, second trimester19.5–82.5 ng/mL62–262.4 nmol/L
Pregnancy, third trimester65–229 ng/mL206.7–728.2 nmol/L
Postmenopausal periodLess than 1 ng/mLLess than 3 nmol/L

Critical Findings and Potential Interventions
N/A

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