Skip to content

Gram Stain of Genital Fluid

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

This test examines the microscopic appearance of cells and bacteria in your genital fluid to help identify infections, such as those caused by bacteria like *Chlamydia*, *Gonococcus*, or yeast.

Quick summary

["A gram stain helps determine if an infection is present and guides treatment choices."]

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

Key facts at a glance

LOINC
6467-5
Short code
Gram Stn Genital fl
Synonyms
Gram Stn Genital fl
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
gram-stain
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

What Is a Gram Stain Used For?

A gram stain is a simple laboratory test that colors bacteria differently (either purple or pink) to distinguish between types of microbes. This helps doctors identify whether your genital fluid contains harmful bacteria, yeast, or other organisms that may require treatment.

How Is the Test Performed?

Your healthcare provider will collect a sample of genital fluid (e.g., from the cervix, urethra, or vagina) using a sterile swab. The sample is then sent to a lab, where a trained technician stains it with a special dye and examines it under a microscope.

When Might You Need This Test?

You may need a gram stain if you have symptoms like unusual discharge, pain during urination, or vaginal/penile irritation, or if you’ve been diagnosed with a sexually transmitted infection (STI). It’s also sometimes used as part of routine screening in certain clinical settings.

What Are Common Findings?

Results may show clusters of white blood cells (indicating inflammation), specific bacteria (e.g., *Neisseria gonorrhoeae* or *Chlamydia*), or yeast cells. These findings help determine if an infection is present and guide further testing or treatment.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Genital Fluid Gram Stain

Frequently asked questions

Why was I asked to have this test?
Your doctor may have recommended this test to check for infections like gonorrhea, chlamydia, or yeast infections, especially if you have symptoms or risk factors. It’s a simple way to identify potential issues before they worsen.
What does a positive result mean?
A positive result means the lab found bacteria, yeast, or other microbes in your sample that may require treatment. Your doctor will discuss next steps, such as antibiotics or antifungal medication, based on the specific findings.
Can I take antibiotics before the test?
No, avoid antibiotics or other medications that may affect the sample unless instructed by your doctor. Follow their guidance to ensure accurate results.
  1. 1
  2. 2
  3. 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.

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