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Vaginal Lactobacillus Quantification (Qualitative or Semi-Quantitative Culture)

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

This test checks for the presence and balance of healthy bacteria (Lactobacillus) in your vaginal area. These bacteria help protect against harmful infections.

Quick summary

["Lactobacillus balance is key to vaginal health; imbalances may signal infections or other concerns."]

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

Key facts at a glance

LOINC
105060-8
Short code
T vaginalis Spec Ql
Synonyms
T vaginalis Spec Ql
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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 Is Done

Your healthcare provider may recommend this test if you experience symptoms like unusual vaginal discharge, odor, itching, or discomfort. It can also help diagnose conditions like bacterial vaginosis or monitor treatment effectiveness.

What to Expect Before the Test

No special preparation is needed. You may shower or clean your vaginal area gently the day of the test, but avoid using douches, vaginal creams, or tampons. Avoid sexual activity for 24 hours before testing.

How the Test Is Performed

A healthcare provider collects a sample from your vagina using a sterile swab. The swab is then sent to a lab for culture and analysis to identify Lactobacillus presence and count.

What the Results Mean

Results are qualitative (present/absent) or semi-quantitative (low, moderate, high levels). High Lactobacillus counts often indicate a healthy vaginal microbiome, while low counts may suggest an imbalance or infection.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Vaginal Lactobacillus Count

Frequently asked questions

What does a ‘normal’ result mean?
A ‘normal’ result typically shows sufficient Lactobacillus presence, which supports a healthy vaginal environment. However, results can vary based on individual health and testing methods. Always discuss results with your provider.
Can diet or medications affect this test?
Certain foods, probiotics, or medications (like antibiotics) can temporarily alter vaginal bacteria. Avoiding these factors for a few days before testing can help ensure accurate results.
Is this test covered by insurance?
Coverage depends on your diagnosis and insurance plan. Check with your provider or insurance company to confirm if this test is recommended and covered under your plan.
  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