Skip to content

Nucleic Acid Detection in Blood Using a Probe-Based Assay

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

This test detects the presence of specific genetic material (DNA or RNA) in your blood using a specialized probe. It may be used to screen for infections, genetic conditions, or other molecular abnormalities.

Quick summary

["This test helps identify genetic material that could indicate infections, genetic disorders, or other health concerns."]

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

Key facts at a glance

LOINC
5000-5
Short code
CMV DNA Spec Ql NAA+probe
Synonyms
CMV 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 analyzes a sample of your blood to check for the presence of specific genetic sequences. A probe is used to bind to these sequences, allowing for detection. This can include viral, bacterial, or other genetic material depending on the clinical indication.

How the Test Works

Your blood sample is processed to extract nucleic acids (DNA or RNA). The probe targets a specific sequence within these nucleic acids, enabling detection through a sensitive assay method. This process helps confirm or rule out certain conditions based on molecular patterns.

Common Uses

This type of test may be used for diagnosing infections (e.g., viral or bacterial), detecting genetic mutations, or screening for conditions where nucleic acid presence is indicative of disease.

Sample Collection and Preparation

A blood sample is collected, typically from a vein. The sample is then processed in the lab to isolate nucleic acids, which are analyzed using the probe-based method. This ensures accurate detection of the target genetic material.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Nucleic Acid Probe Test

Frequently asked questions

Why might I need this test?
Your healthcare provider may recommend this test if you have symptoms suggestive of an infection, a genetic condition, or if you are at risk for certain diseases where nucleic acid testing is useful.
What does a positive result mean?
A positive result indicates the presence of the targeted nucleic acid sequence, which may suggest an infection, genetic mutation, or other molecular abnormality. Your doctor will interpret the results in the context of your symptoms and medical history.
How long does it take to get results?
Results may be available within a few days to a week, depending on the lab’s processing time and clinical urgency. Your healthcare provider will discuss the timeline with you before the test.
  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