Gram Stain of Genital Fluid
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.
["A gram stain helps determine if an infection is present and guides treatment choices."]
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?
What does a positive result mean?
Can I take antibiotics before the test?
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