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Chlamydia trachomatis nucleic acid detection (vaginal probe)

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

This test checks for the presence of genetic material from *Chlamydia trachomatis*, a common bacterial infection that can affect the reproductive system.

Quick summary

["A simple test to detect a sexually transmitted infection that may cause pain, bleeding, or long-term health risks if untreated."]

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

Key facts at a glance

LOINC
35717-8
Short code
Chlamydia rRNA Vag Ql Probe
Synonyms
Chlamydia rRNA Vag Ql Probe
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
probe
CPT
87110
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

How the Test Works

The test uses a vaginal swab to collect a sample that is analyzed for *Chlamydia trachomatis* genetic material. This method is highly sensitive and can detect the infection even when symptoms are not present.

Sample Collection

A healthcare provider will insert a sterile swab into your vagina to collect a sample. This is usually a quick, painless procedure and may cause mild discomfort. No special preparation is needed.

What to Expect After the Test

After the test, you may experience mild vaginal discharge or mild cramping, which should resolve on its own. Avoid douching or using vaginal products for 24 hours after the test to ensure accurate results.

Possible Results

If the test is positive, you will need to see a healthcare provider for treatment with antibiotics. If negative, further testing may be recommended if you have symptoms or risk factors for infection.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

Why is this test important?
Chlamydia is one of the most common sexually transmitted infections (STIs) and can lead to serious health issues if left untreated, such as pelvic inflammatory disease, infertility, or increased risk of HIV infection. Early detection and treatment are crucial to prevent complications.
What does a positive result mean?
A positive result means you have an active *Chlamydia trachomatis* infection. Treatment typically involves a course of oral antibiotics, and your partner(s) should also be tested and treated to prevent reinfection.
How soon can I expect results?
Results are usually available within 24 to 72 hours. Follow-up instructions will be provided by your healthcare provider based on your test 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