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Quantitative detection of specific DNA sequences in plasma using a nucleic acid amplification probe test

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

This test measures certain DNA fragments in your blood to help identify genetic material from pathogens, cells, or other substances. It may be used to detect infections, monitor disease progression, or assess genetic conditions.

Quick summary

["This test helps diagnose infections, track disease activity, or check for genetic markers in your blood."]

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

Key facts at a glance

LOINC
101943-9
Short code
C parap DNA Spec Ql NAA+probe
Synonyms
C parap 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 detects and quantifies specific DNA sequences in your plasma. These sequences can come from viruses, bacteria, cancer cells, or other biological sources. The probe amplifies and identifies these sequences using advanced laboratory techniques.

How the Test Works

Your blood sample is processed to isolate plasma, where the DNA sequences are identified and measured. The test uses a probe (a short, labeled DNA fragment) that binds to the target DNA, allowing for precise detection and quantification.

Common Uses

This test may be used for diagnosing infections (e.g., viral or bacterial), monitoring chronic conditions (e.g., cancer), or detecting genetic markers in research or clinical settings.

When You Might Need This Test

Your healthcare provider may order this test if you have symptoms of infection, suspected genetic disorders, or if you’re being monitored for conditions requiring DNA analysis in plasma.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

DNA Probe Test (Plasma)

Frequently asked questions

Why might my results matter?
If abnormal DNA sequences are found, they could indicate an infection, cancer, or other genetic conditions. Results help guide treatment decisions, monitor disease progression, or confirm diagnoses that standard tests cannot.
How long will I need to wait for results?
Results are typically available within 3–7 business days, depending on lab processing times. Your provider will discuss the findings with you during follow-up.
What if my results are abnormal?
Abnormal results may require further testing or additional evaluation by your healthcare team. They could suggest an infection, genetic condition, or other health concerns that need closer monitoring or treatment.
  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