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Estrogen (Estradiol) in Saliva

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

This test measures the amount of estradiol, a primary female sex hormone, in your saliva. It can help assess hormonal balance, especially useful for tracking estrogen levels over time.

Quick summary

["Salivary estradiol testing may support hormone-related health decisions, including fertility or menopause management."]

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

Key facts at a glance

LOINC
2238-4
Short code
Estradiol Sal-mCnc
Synonyms
Estradiol Sal-mCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
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
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 menstrual cycles, hot flashes, or signs of hormonal imbalances. It could also be used to monitor treatment effectiveness for conditions like polycystic ovary syndrome (PCOS) or hormone replacement therapy.

What to Expect Before the Test

No special preparation is needed. You’ll likely provide a small saliva sample, which can be collected at home or in a lab. Avoid eating or drinking for 30 minutes before collecting the sample to ensure accurate results.

How the Test Works

Saliva is collected using a special swab or container. The test measures estradiol levels by detecting its presence in the saliva, which reflects circulating hormone levels indirectly.

What the Results Mean

Results provide a qualitative or quantitative estimate of estradiol concentration in your saliva. Your provider will interpret these results in relation to your symptoms, medical history, and other relevant factors.

Reference range

Premenopausal: 20-400 pg/mL; Postmenopausal: <30 pg/mLN/A

Specimen: serum

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

Salivary Estradiol

Frequently asked questions

How often should I get this test?
The frequency depends on your medical needs. Your healthcare provider will determine how often to repeat the test based on your symptoms, treatment plan, or other factors.
What do my results indicate about my hormone levels?
Your results will be compared to general reference ranges or your personal baseline. If results are outside expected ranges, your provider will discuss potential causes, such as menopause, thyroid issues, or medications.
Can I take anything to prepare for this test?
No specific preparation is required, but avoid eating or drinking for 30 minutes before collecting the sample to ensure accurate results.
  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