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Nucleic Acid Detection in Biological Specimen by Fluorescence Probe

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

This test detects the presence of genetic material (such as DNA or RNA) in a sample using a fluorescent probe. It’s often used to screen for infections, genetic conditions, or other molecular markers.

Quick summary

["This test helps identify genetic material quickly and accurately, useful for diagnosing infections or genetic disorders."]

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

Key facts at a glance

LOINC
74537-2
Short code
N men sg C DNA Spec Ql NAA+probe
Synonyms
N men sg C DNA Spec Ql NAA+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-amp-tar
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 This Test Measures

The test uses a specialized probe that binds to specific sequences of nucleic acids (DNA or RNA) in your sample. When the probe binds, it emits a fluorescent signal, which is detected and measured. This helps confirm whether the target genetic material is present.

How the Sample is Collected

The sample type depends on your medical reason for testing. Common samples include blood, saliva, or other bodily fluids. Your healthcare provider will explain which sample is needed for your specific test.

Common Uses in Healthcare

This test is commonly used for early detection of infections (e.g., viruses like COVID-19), genetic screening, or monitoring certain conditions where nucleic acids play a role.

What the Results Mean

A positive result indicates the presence of the target nucleic acid, which may suggest an infection, genetic condition, or other underlying issue. A negative result means the target was not detected in this sample. Results should always be interpreted by a healthcare provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

This test plays a critical role in diagnosing infections, identifying genetic mutations, or confirming the presence of specific biomarkers. It is highly sensitive and can provide rapid results, which is particularly valuable in clinical settings where timely diagnosis is essential.

Short name

Nucleic Acid Probe Test

Frequently asked questions

Why might I need this test?
Your doctor may recommend this test if you have symptoms of an infection, are at risk for a genetic condition, or if you need to monitor a known condition involving nucleic acids.
How long does it take to get results?
Results are typically available within hours or days, depending on the lab processing time and your healthcare provider’s workflow.
Can I prepare for this test?
No special preparation is usually needed, but follow your healthcare provider’s instructions regarding fasting, medications, or other restrictions that may apply.
  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