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Estrogen concentration (serum/plasma) from ovulation date

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

This test measures the amount of estrogen, a key hormone involved in female reproductive health, at a specific time tied to your ovulation date.

Quick summary

["Estrogen levels help track fertility and reproductive function over time."]

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

Key facts at a glance

LOINC
11886-9
Short code
GA Est from ovulation date
Synonyms
GA Est from ovulation date
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-ovulation-date
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

What Is Estrogen?

Estrogen is a primary female sex hormone that plays a critical role in menstrual cycles, pregnancy, and overall reproductive health. It helps regulate periods, supports bone and heart health, and influences mood and energy levels.

Why Is This Test Ordered?

Your healthcare provider may order this test to assess hormone balance, evaluate fertility issues, diagnose conditions like polycystic ovary syndrome (PCOS), or monitor treatment for hormonal imbalances.

When Might You Need This Test?

Tests like this are often taken during specific phases of the menstrual cycle, such as mid-cycle (around ovulation), or at other times if symptoms suggest hormonal irregularities (e.g., missed periods, irregular cycles, or infertility).

How Is the Test Performed?

A blood sample is drawn from a vein in your arm. The sample is then processed to measure estrogen levels using a sensitive laboratory method, such as immunoassay.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Estrogen levels can indicate whether ovulation is occurring normally, help diagnose hormonal disorders, or guide treatment plans for conditions affecting fertility or menstrual irregularities. Abnormal results may signal conditions like ovarian dysfunction or thyroid issues.

Short name

Estrogen Level (Serum/Plasma)

Frequently asked questions

How soon will I get my results?
Results are typically available within 1–3 business days, depending on your lab’s processing time. Your healthcare provider will discuss them with you.
What does a low or high estrogen level mean?
Low levels may suggest ovulation problems, hormonal imbalances, or conditions like premature ovarian insufficiency. High levels could indicate polycystic ovary syndrome (PCOS) or other endocrine disorders. Only your provider can interpret these results in context with your health.
Can I take anything special before the test?
No special preparations are needed, but avoid heavy meals 2 hours before your appointment. If you’re tracking ovulation, note the date of ovulation for reference.
  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