Genital Mucus pH (Qualitative) – Semen Sample
This test evaluates the acidity or alkalinity of genital mucus (including semen) to assess reproductive health, often used in fertility evaluations or post-treatment monitoring.
["Understanding your genital mucus pH can help track fertility, infection risks, or treatment progress."]
Key facts at a glance
- LOINC
- 22970-8
- Short code
- CFV-IgA
- Synonyms
- C fetus Vener IgA Genital mucus Ql
- Category
- chemistry
- Sample
- serum
- Container
- Sterile transport vial or swab in Amies or Stuart transport medium
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- ≥ 0 years
- Method
- Enzyme Immunoassay (EIA) or Immunofluorescence Assay (IFA) for detection of IgA antibodies
- CPT
- 82784
- SNOMED
- 408100009
- Specimen volume
- 0.5-1 mL of genital mucus or appropriate swab sample
- Stability
- Refrigerated (2-8°C): up to 48 hours. Frozen (-20°C or below): up to 30 days. Avoid repeated freeze-thaw cycles.
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 24–72 hours
- Order
- routine
What This Test Measures
Genital mucus pH measures how acidic or basic (alkaline) the fluid is. Healthy genital mucus typically has a slightly acidic pH, which can vary depending on factors like hormonal cycles, hydration, or recent sexual activity. This test is often performed on a semen sample but may also assess vaginal or cervical mucus in certain contexts.
Why It’s Done
A genital mucus pH test may be recommended to diagnose or monitor conditions such as bacterial infections (e.g., *Trichomonas*), yeast infections, or to evaluate fertility. It can also help assess the effectiveness of treatments for conditions like recurrent infections or post-treatment follow-ups.
Sample Collection and Preparation
For semen samples, this test typically requires a fresh sample collected during ejaculation. If testing vaginal or cervical mucus, a sample may be collected using sterile swabs or collected during a gynecological exam. Proper collection ensures accurate results.
What to Expect Before the Test
Avoid sexual activity or douching 24–48 hours before testing to ensure an accurate sample. Avoid using vaginal lubricants or spermicides that may alter the pH. Hydration and avoiding alcohol or caffeine for a few hours before testing may also help stabilize results.
Reference range
Negative: No detectable Campylobacter fetus ss venerealis IgA antibodies. Positive: IgA antibodies detected, suggesting prior exposure or active infection with Campylobacter fetus subspecies venerealis.N/A
Genital mucus sample should be collected by a veterinarian using aseptic technique. The animal should be properly restrained. No fasting is required. Sample should be collected prior to antibiotic administration if possible.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
An abnormal pH (either too acidic or too alkaline) can indicate infections (e.g., bacterial vaginosis, trichomoniasis), hormonal imbalances, or other reproductive health concerns. A healthcare provider will interpret results in the context of your symptoms, medical history, and other tests.
Frequently asked questions
How long does it take to get results?
Can lifestyle changes affect this test?
Is this test painful or uncomfortable?
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