Estrogen (Total) in Serum
This test measures the total amount of estrogen hormones in your blood. Estrogen is a key hormone for women’s health, affecting menstrual cycles, pregnancy, and overall reproductive function.
["Your estrogen levels help balance hormones and support reproductive health."]
Key facts at a glance
- LOINC
- 11885-1
- Short code
- GA Est from LMP
- Synonyms
- GA Est from LMP
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- estimated-from-last-menstrual-period
- 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 have symptoms like irregular periods, infertility, or signs of hormonal imbalances. It could also be part of a general health check or monitoring for conditions like polycystic ovary syndrome (PCOS) or hormone-related cancers.
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 draw if your lab requires it. Wear a loose shirt for easy access to your arm.
How the Test Works
A small sample of blood is drawn from a vein in your arm. The blood is then sent to a lab where it’s analyzed to measure total estrogen levels using a sensitive immunoassay method.
What the Results Mean
Results help doctors assess hormone balance, diagnose conditions, or guide treatment plans. While reference ranges vary by age and health status, very high or very low levels may signal underlying issues.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Estrogen levels are critical for fertility, bone health, and cardiovascular protection. Abnormally low levels may indicate conditions like premature ovarian failure, while high levels could relate to tumors or other hormonal disorders. Regular monitoring is important for women undergoing hormone therapy or managing reproductive health.
Short name
Total Estrogen
Frequently asked questions
What causes estrogen levels to change?
How long does it take to get results?
Can diet or supplements affect estrogen test results?
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