Vaginal pH (qualitative, measured as substance concentration in fluid specimen)

Why It’s Done

Doctors may order this test to diagnose conditions like bacterial vaginosis, yeast infections, or to monitor changes in your vaginal environment, especially after treatments or during pregnancy. It can also help guide decisions about medications or further testing.

What to Expect

You’ll likely have a simple swab inserted into your vagina to collect a small sample. The fluid is then tested in a lab for pH levels. Most tests are quick and painless, though you may feel slight discomfort during insertion. No special preparation is needed, but avoid douching or using vaginal products 24 hours before the test.

What the Results Mean

A healthy vaginal pH typically ranges between 3.8 and 4.5. Higher pH levels (closer to 5 or above) may suggest bacterial overgrowth or infection, while lower pH (below 3.8) could indicate yeast overgrowth or other conditions. Your doctor will interpret results in the context of your symptoms and medical history.

Common Conditions Linked to pH Changes

Abnormal pH levels can signal infections like bacterial vaginosis (often linked to a higher pH) or candidiasis (yeast infections, which may show slightly lower pH). It can also help detect changes after hormonal shifts (e.g., pregnancy, menopause) or after certain treatments.