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White Blood Cell Differential with Vaginal Swab Preparation (Qualitative Immunoassay)

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

This test measures the types of white blood cells in a sample of vaginal fluid using an immunoassay method. It helps assess immune response or infection in the vaginal area.

Quick summary

["This test helps identify potential vaginal infections or immune responses by examining white blood cell types in fluid samples."]

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

Key facts at a glance

LOINC
12226-7
Short code
WBC Vag Ql Wet Prep
Synonyms
WBC Vag Ql Wet Prep
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
4.5
Ref high
11
Critical range
2 N/A – 30 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
wet-preparation
CPT
85004
SNOMED
900000000000003002
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 order this test if you have symptoms like unusual vaginal discharge, itching, or irritation. It can also be used to monitor conditions like bacterial vaginosis or to check for immune responses in the vaginal area.

How the Test Works

A swab is collected from your vagina to gather fluid. The fluid is then analyzed using an immunoassay to detect and compare different types of white blood cells, such as neutrophils, lymphocytes, and others.

Sample Collection Process

You’ll likely be asked to clean your vaginal area gently before the swab is inserted. The procedure is quick and usually painless. The sample is then sent to the lab for testing.

What to Expect Before the Test

Avoid douching or using vaginal products 24 hours before the test. Wear comfortable clothing and plan to rest afterward if you feel dizzy or lightheaded.

Reference range

Adult: 4.5-11.0 x 10^9/LN/A

Specimen: serum

No special preparation required. Stay well hydrated.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

WBC Differential (Vaginal Swab)

Frequently asked questions

What does a positive or abnormal result mean?
A positive or abnormal result may suggest an infection (like bacterial vaginosis), an immune response, or inflammation in the vaginal area. Your provider will discuss the results with you and may recommend further testing or treatment.
How long does it take to get results?
Results are typically available within 24 to 48 hours, depending on lab processing times. Your provider will contact you once the results are ready.
Can I take anything before the test?
Yes, avoid vaginal douches, perfumed products, or sexual activity 24 hours before the test 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