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Serum/plasma progesterone concentration (quantitative measurement)

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

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

Quick summary

["Progesterone levels can help diagnose hormonal imbalances or track fertility treatment progress."]

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

Key facts at a glance

LOINC
17490-4
Short code
Progest sp9 p chal SerPl-mCnc
Synonyms
Progest sp9 p chal SerPl-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 Is This Test Done?

Your healthcare provider may order this test to check for hormonal issues, such as irregular periods, infertility, or signs of pregnancy. It can also help monitor conditions like polycystic ovary syndrome (PCOS) or evaluate hormone replacement therapy.

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 drawing blood from a vein. If you’re taking oral medications, let your provider know.

How the Test Is Performed

A healthcare professional will draw blood from a vein in your arm using a small needle. You may feel a slight pinch, but it usually doesn’t cause discomfort afterward.

What the Results Mean

Results are interpreted based on your cycle phase, age, and medical history. Abnormal levels may indicate hormonal disorders or other health concerns that need further evaluation.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Progesterone Level

Frequently asked questions

When might I get my test results back?
Results are typically available within 1–3 business days, depending on your lab. Your provider will contact you to discuss them, so check in with them for updates if needed.
Is fasting required for this test?
Sometimes fasting is recommended, but your provider will specify if it applies. If unsure, ask before your appointment.
What if my results are outside the expected range?
Your provider will explain what your results mean in the context of your health. They may recommend further testing or adjustments to your treatment plan if needed.
  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