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Neisseria gonorrhoeae nucleic acid probe test (conjunctival swab)

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

This test checks for the presence of *Neisseria gonorrhoeae* bacteria in your eye or conjunctiva using a molecular probe. It helps diagnose gonorrhea infections that may affect the eyes.

Quick summary

["A quick, accurate way to detect eye infections caused by gonorrhea."]

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

Key facts at a glance

LOINC
33904-4
Short code
N gonorrhoea rRNA Conjunct Ql Probe
Synonyms
N gonorrhoea rRNA Conjunct 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
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

A small swab is gently collected from your conjunctiva (the clear tissue around your eye). The swab is then analyzed in a lab to detect genetic material from *Neisseria gonorrhoeae*. This method is highly sensitive and can identify the bacteria even if symptoms are mild or absent.

What to Expect Before the Test

You may experience mild discomfort or a slight stinging sensation during the swab collection. No special preparation is needed, but avoid applying eye drops or ointments before the test.

Possible Symptoms to Report

If you have eye redness, discharge, pain, or swelling, inform your healthcare provider before the test. These symptoms may indicate an infection requiring treatment.

When Results Are Needed

Results are typically available within 24 to 48 hours. Your provider will discuss the findings with you during a follow-up visit.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

This test is crucial for diagnosing gonorrhea in the eye, which can lead to serious complications if untreated, such as severe eye inflammation, vision loss, or spread to other parts of the body. Early detection allows for prompt treatment with antibiotics.

Short name

Gonorrhea Conjunctival Probe Test

Frequently asked questions

Why was I asked to take this test?
You may have been tested if you have symptoms like eye redness, discharge, or pain, or if you were exposed to gonorrhea. Your healthcare provider may also recommend this test as part of routine screening for sexually transmitted infections (STIs).
What does a positive result mean?
A positive result means the test detected genetic material from *Neisseria gonorrhoeae*, confirming a gonorrhea infection in your eye. You will need to follow your provider’s instructions for treatment, which may include antibiotics.
What if I have a negative result?
A negative result means the test did not detect gonorrhea bacteria in your sample. However, if you have symptoms, you may need further testing or retesting. Follow-up with your healthcare provider to address your concerns.
  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