Progesterone, Serum Concentration
This test measures the amount of progesterone, a hormone produced by the ovaries, in your blood. Progesterone plays a key role in regulating the menstrual cycle, pregnancy, and the menstrual cycle phases.
["Progesterone levels help diagnose fertility issues, monitor ovulation, and assess hormonal imbalances."]
Key facts at a glance
- LOINC
- 2838-1
- Short code
- Progest Sal-mCnc
- Synonyms
- Progest Sal-mCnc
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Might Be Ordered
Your healthcare provider may recommend this test if you’re experiencing irregular periods, trouble getting pregnant, or symptoms like breast tenderness, acne, or mood changes that could be linked to hormonal fluctuations. It may also be used during pregnancy to track fetal development or evaluate ovarian function.
What to Expect Before the Test
No special preparation is usually needed, but you may be asked to fast for 8–12 hours before the blood draw if your lab requires it. Wear a comfortable shirt for easy access to your arm. If you’re taking hormonal medications (like birth control), let your provider know, as this may affect results.
What the Test Involves
A healthcare professional will insert a small needle into your arm to draw blood. The process takes about 5 minutes, and you may feel a brief pinch. The blood sample is then sent to a lab for analysis. Results are typically ready within 1–3 business days.
What the Results Mean
Progesterone levels vary depending on your menstrual cycle phase or reproductive status. For example, levels rise during ovulation and peak in early pregnancy. Your provider will interpret results in the context of your medical history and symptoms, not just the absolute number.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Low progesterone levels may indicate issues like polycystic ovary syndrome (PCOS), premature ovarian failure, or problems with ovulation. High levels could signal conditions like ovarian tumors or certain endocrine disorders. During pregnancy, elevated progesterone supports uterine lining growth and prevents premature contractions. Always discuss results with your healthcare provider.
Short name
Progesterone Level
Frequently asked questions
How long does it take to get results?
Can I take anything before the test?
Does this test affect fertility treatments?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy