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Vaginal pH (Substance Concentration, Urine)

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

This test measures the acidity (pH level) of vaginal fluids, which can help assess vaginal health and balance of bacteria or yeast.

Quick summary

["A healthy vaginal pH helps prevent infections and supports normal vaginal flora."]

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

Key facts at a glance

LOINC
105096-2
Short code
T vaginalis UrnS Ql
Synonyms
T vaginalis UrnS Ql
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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 It’s Done

Doctors may order a vaginal pH test to diagnose or monitor conditions like bacterial vaginosis, yeast infections, or other vaginal imbalances. It can also be part of routine pelvic exams or after certain treatments.

What to Expect During the Test

The test involves collecting a small sample of vaginal fluid, which is then analyzed in a lab. No special preparation is needed, but you may be asked to avoid douching or using vaginal products 24 hours before the test.

How the Results Are Interpreted

A healthy vaginal pH typically ranges between 3.8 and 4.5. Values outside this range may indicate an imbalance, which could signal an infection or other health concern.

Common Causes of Abnormal Results

High pH levels (more alkaline) may suggest bacterial vaginosis or other infections, while very low pH could indicate overgrowth of yeast. Stress, hormonal changes, or certain medications can also affect vaginal pH.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Vaginal pH Test

Frequently asked questions

What does a vaginal pH test tell me about my health?
A vaginal pH test helps identify imbalances that may lead to infections or discomfort. It’s not a diagnostic test for specific conditions but can guide further evaluation if needed.
How often should I get this test?
This test is typically done as needed—either for symptoms like unusual discharge, odor, or itching, or as part of preventive care. Your healthcare provider will determine the best schedule for you.
Can lifestyle changes affect my vaginal pH?
Yes, factors like diet, stress, hygiene practices, and certain medications can influence vaginal pH. Avoiding harsh soaps, limiting douching, and maintaining good hygiene can help keep levels balanced.
  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