Normal results for the PROGESTERONE test vary depending on the specific context and the stage of the menstrual cycle or pregnancy. In general, for non-pregnant females:
Follicular Phase: 0.1 to 0.9 nanograms per milliliter (ng/mL).
Luteal Phase: 2.0 to 25.0 ng/mL.
Pregnant (first trimester): Varies widely but typically increases significantly.