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Gonorrhea and Chlamydia Dual Screening Test (Nucleic Acid Amplification)

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

This test checks for infections caused by *Neisseria gonorrhoeae* (gonorrhea) and *Chlamydia trachomatis* (chlamydia) using a sample of vaginal fluid or urine.

Quick summary

["Early detection helps prevent complications like pelvic inflammatory disease or long-term fertility issues."]

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

Key facts at a glance

LOINC
584-3
Short code
Gp B Strep Vag Ql Cult
Synonyms
Gp B Strep Vag Ql Cult
Category
coagulation
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
organism-specific-culture
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 Matters

Both gonorrhea and chlamydia are common sexually transmitted infections (STIs) that can cause serious health problems if untreated. This test helps identify infections early so you can get treatment and avoid spreading them to others.

How the Test Works

The test uses a special lab technique to detect genetic material from the bacteria in your sample. It’s highly sensitive and can detect even small amounts of infection.

Sample Collection

You may provide a vaginal swab or a urine sample, depending on your provider’s instructions. The sample is sent to the lab for testing.

What to Expect After Testing

Results are usually ready within a few days. If you test positive, your provider will guide you on treatment options, which typically include antibiotics.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Dual STI Screen

Frequently asked questions

What are the normal reference ranges for this test?
This test does not provide numeric reference ranges for gonorrhea or chlamydia detection. Instead, results are reported as either positive or negative for each infection. A positive result means the infection is present and requires medical attention.
How often should I get this test?
The frequency depends on your risk factors. If you’re sexually active with multiple partners or have symptoms, your healthcare provider may recommend testing every 3–6 months. If you’re asymptomatic, follow your provider’s guidance based on your health history.
Can I still have sex while waiting for results?
Avoid sexual contact until you receive your results and have been treated for any confirmed infections. Always use protection if you’re unsure about your status or that of your partner’s.
  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