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Serum/plasma progesterone concentration (substance concentration)

Published: August 9, 2026Updated: August 16, 2026

This test measures the amount of progesterone, a hormone produced by the ovaries, in your blood. Progesterone helps regulate your menstrual cycle and supports pregnancy.

Quick summary

["Progesterone levels can indicate fertility, pregnancy status, or potential hormonal imbalances."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
47181-3
Short code
Progest 1.5h p chal SerPl-sCnc
Synonyms
Progest 1.5h p chal SerPl-sCnc
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 to evaluate reproductive health, diagnose conditions like polycystic ovary syndrome (PCOS), assess fertility, or monitor hormone-related treatments. It could also be used during pregnancy to track early development or rule out complications.

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 test if it involves a blood draw. Wear comfortable clothing and plan to stay near the testing site for a short time.

What Happens During the Test

A healthcare professional will draw blood from a vein in your arm. You may feel a slight pinch, but it’s typically over quickly. The blood is then sent to a lab for analysis.

What the Results Mean

Results are compared to standard ranges for your age and reproductive status. Low or high levels may signal underlying health concerns, but interpretation depends on your medical history and symptoms.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Progesterone Level

Frequently asked questions

How long does it take to get my results?
Results are typically available within 1–3 business days, depending on your lab’s processing time. Your healthcare provider will contact you once they’re ready to discuss them.
Can I eat or drink before this test?
If fasting is required (common for blood tests), avoid food and liquids—except water—for 8–12 hours before testing. If no fasting is needed, follow your provider’s instructions.
Is there any risk or discomfort with this test?
Most people experience mild discomfort during the blood draw, such as a brief pinch or slight bruising. Rarely, there may be swelling or bleeding at the site. Most side effects are minor and resolve quickly.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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