Is a progesterone level of 4.180 normal?

Generally, whether a progesterone level of 4.180 (prog 4.180) is normal depends on the individual's physiological stage at the time of testing. For non-pregnant women, this value is often within the normal range, whereas for pregnant women, it may indicate a low level. If concerned, it is recommended to consult a healthcare provider promptly. Detailed analysis is as follows:

If the person tested is a non-pregnant woman in the follicular or luteal phase of the menstrual cycle, a progesterone level of 4.180 (commonly measured in nmol/L) typically falls within the normal range. Progesterone levels are naturally low during the follicular phase. During the luteal phase, a value in this range may suggest suboptimal corpus luteum function; however, if there are no obvious menstrual abnormalities (such as prolonged periods or abnormal flow), specific treatment is usually unnecessary—regular monitoring is sufficient.

If the person tested is a pregnant woman, especially in early pregnancy (before 6 weeks), a progesterone level of 4.180 (in nmol/L) is generally below the normal range. This may indicate inadequate corpus luteum function or poor embryonic development, increasing the risk of threatened miscarriage (e.g., vaginal bleeding, abdominal pain). In the second and third trimesters, progesterone levels normally rise significantly; if the level remains as low as 4.180 at this stage, placental dysfunction may be suspected, warranting further evaluation of fetal development.

After obtaining a progesterone result of 4.180, individuals should inform their doctor of their current physiological stage. Repeat testing or additional examinations (such as ultrasound or HCG testing) may be necessary. Pregnant women with low progesterone levels should follow medical advice regarding fetal preservation measures or further assessments, avoiding self-diagnosis that could delay timely intervention.