A healthy result should fall into the range 6 - 20 ng/mL.
Although progesterone is found in both males and females, it is primarily known for its role in conception, pregnancy, and the regulation of a woman’s menstrual cycle. Produced in the ovaries, adrenal glands, and the placenta of pregnant women, progesterone has several functions in addition to its role as a sex hormone. It supports bone density, protects against the proliferation of breast and uterine cells, and acts as a coating for the nerve fibers of the brain, reducing hyperexcitability. A female’s progesterone levels rise and fall according to the stages of her life. While men also synthesize a small amount of this hormone, it is much less important than testosterone when it comes to sexual maturity. Synthetic forms of progesterone (progestins) are widely used in birth control pills and hormone replacement therapy.
Natural progesterone levels are suppressed in women who take synthetic forms, so blood tests are inaccurate in these case. Otherwise, a blood test is usually administered twenty-one days after the start of a woman’s period, if she is still menstruating. Because progesterone readings normally fluctuate in women, there are a number of normal ranges for this hormone, as shown here:
|Follicular phase||0.2-1.4||0.64 – 4.45|
|Luteal phase||4 – 25||12.7 – 79.5|
|Post-Menopausal||0.1 – 1||0.32 – 3.18|
|Males||0.1 – 1||0.32 – 3.18|
Conversion factor: 1 ng/ml = 3.18 nmol/l
While variations in progesterone levels may be perfectly normal, sometimes a high reading is cause for further testing.
Causes of decreased Progesterone levels in women:
- Peri-menopause (= the time during which your body makes the natural transition to menopause, marking the end of the reproductive years.
- Amenorrhea (= the absence of menstruation — one or more missed menstrual periods.)
- Anovulation (=when the ovaries do not release an oocyte during a menstrual cycle.)
Causes of increased Progesterone levels in women:
- Progesterone supplementation
- Diffuse thecal luteinization
- Luteinized granulosa
- Theca-cell tumors
- Metastatic ovarian cancer
- High dose pregnenalone supplementation
$15 per monthSelect this plan
$59 per yearSelect this plan
$250 single paymentSelect this plan
Health is not exactly rocket science. You just have to know what your body needs and doesn't need. Your medical tests contain that information. Upload them to our service and we’ll help you understand, organize, and act on them.Get Started
"I was really concerned about my lab results and my GP was not able to see me for another week. Through HealthMatters I was able to interpret my results instantly."
"I've been keeping all my lab results in a spreadsheet, covering approximately 20 years. The HealthMatters team helped me upload that info into the cloud. I can show this data to my family and doctors now easily."
"I had no idea what my lab results meant. Here I found all the biomarkers that I was looking for online. Finally, I have not only organized them all neatly in one place, but I am also grateful to be able to understand what they mean."