24-Hour Urinary Estradiol Concentration
This test measures the amount of estradiol, a form of estrogen, collected in your urine over a 24-hour period. It helps assess long-term estrogen levels in your body.
["This test provides insight into your estrogen exposure over time, useful for monitoring hormonal health."]
Key facts at a glance
- LOINC
- 34287-3
- Short code
- Estradiol 24h Ur-sCnc
- Synonyms
- Estradiol 24h Ur-sCnc
- Category
- chemistry
- Sample
- urine
- Container
- Sterile urine container
- Units
- N/A
- Ref low
- 20
- Ref high
- 400
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82670
- SNOMED
- 300919004
- Specimen volume
- 10 mL
- Stability
- Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
Why This Test Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms or conditions related to estrogen, such as irregular menstrual cycles, hormonal imbalances, or suspected exposure to estrogenic substances. It can also be used in research or specialized clinical scenarios to evaluate systemic estrogen levels over a full day.
What to Expect Before the Test
No special preparation is needed, but you may be asked to collect all urine for a full 24-hour period. Typically, you’ll start by voiding at a set time (often morning) and then collect all urine until the same time the next day. Store the urine in a cool place or refrigerator until you deliver it to the lab.
What the Test Measures
Estradiol is a primary estrogen hormone in women and a smaller role in men. This test quantifies the total amount of estradiol excreted in your urine over 24 hours, reflecting your body’s ongoing estrogen production and metabolism.
How Results Are Interpreted
Results are not provided with specific reference ranges in this summary, as they vary by lab and individual health factors. Your healthcare provider will interpret the results in the context of your medical history, symptoms, and other tests.
Reference range
Premenopausal: 20-400 pg/mL; Postmenopausal: <30 pg/mLN/A
For females: inform if menstrual cycle status. For certain tests, timing within menstrual cycle may matter.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
24-Hour Urine Estradiol
Frequently asked questions
What does a 24-hour urine estradiol test tell me about my health?
Can I take medications or supplements before this test?
How long will I need to collect urine for this test?
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