To help recognize and manage some causes of infertility. Since progesterone levels vary throughout the menstrual cycle, multiple (serial) measurements can be used for this purpose. This test is used to establish the presence of a functioning corpus luteum or luteal cell function; confirm basal body temperature measurements for the occurrence of ovulation; obtain an indication of the day of ovulation; evaluate the functional state of the corpus luteum in infertility patients; assess placental function during pregnancy; ovarian function test
- Immunoassay (IA)
- Levels increase sharply during the luteal phase of the menstrual cycle. The level increases from 9 to 32 weeks of pregnancy.
- Heterophil antibodies may produce falsely-elevated results.
- Follicular Phase
- Luteal Phase 2.6-21.5 ng/mL
- First Trimester 4.1-34.0 ng/mL
- Second Trimester 24.0-76.0 ng/mL
- Third Trimester 52.0-302.0 ng/mL