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Neutrophil Count with Differential (Qualitative) via DNA Probe Testing

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

This test uses a specialized DNA probe to qualitatively assess the presence and proportion of neutrophils in your blood, which may help evaluate immune response or infection status.

Quick summary

["A DNA probe test checks for neutrophil activity in your blood, useful for certain immune or infection-related evaluations."]

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

Key facts at a glance

LOINC
92802-8
Short code
C neoform DNA Bld Pos Ql NAA+probe
Synonyms
C neoform DNA Bld Pos Ql NAA+probe
Category
coagulation
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
probe-amp-tar
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

What This Test Measures

This test detects specific genetic material (DNA) from neutrophils, a type of white blood cell. Neutrophils are key players in fighting infections and inflammation. The probe identifies their presence and relative proportion compared to other white blood cells.

Why It Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms suggesting an abnormal immune response, such as persistent infections, certain autoimmune conditions, or suspected granulomatous diseases.

How the Test Works

A small blood sample is taken and processed to isolate DNA. A fluorescent DNA probe binds to neutrophil DNA, allowing for qualitative detection of their presence and proportion through advanced laboratory techniques.

Preparation and Sample Collection

No special preparation is needed. A simple blood draw is performed, similar to other blood tests. The sample is then analyzed in the lab using specialized equipment to detect neutrophil DNA.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

This test can help identify conditions where neutrophil activity is abnormal, such as neutropenia (low neutrophil count), overactive immune responses, or specific infections. It may also assist in diagnosing or monitoring conditions like chronic granulomatous disease or certain cancers.

Short name

Neutrophil DNA Probe Test

Frequently asked questions

What Does a Positive or Abnormal Result Mean?
An abnormal result may indicate an increased or decreased presence of neutrophils, which could signal an infection, immune disorder, or other underlying health condition. Your healthcare provider will interpret results in the context of your symptoms and medical history.
How Often Should I Get This Test?
The frequency depends on your healthcare provider’s recommendations. This test may be part of routine monitoring for certain conditions or performed periodically if you have ongoing symptoms or a known risk factor.
Are There Any Risks or Side Effects?
Blood draws are generally safe, but you may experience mild discomfort or bruising at the site. Rarely, there could be minor bleeding or infection, but serious risks are uncommon.
  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