Skip to content

Cytomegalovirus (CMV) DNA in Plasma/Serum (Qualitative Probe)

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

This test detects the presence of cytomegalovirus (CMV) genetic material in your blood or plasma. It helps determine if you have an active CMV infection.

Quick summary

["This test checks for active CMV infection by looking for its DNA in your blood."]

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

Key facts at a glance

LOINC
101815-9
Short code
CMV DNA CSF NAA+probe-aCnc
Synonyms
CMV DNA CSF NAA+probe-aCnc
Category
chemistry
Sample
csf
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
probe-amp-tar
Specimen volume
1-2 mL
Stability
Immediate analysis required, Refrigerated: 1h
Hemolysis max
200
TAT
4–24 hours
Order
routine

What This Test Measures

The test uses a molecular probe to identify CMV DNA fragments in your plasma or serum. If CMV DNA is found, it suggests an active infection rather than a past exposure. This method is highly sensitive and can detect very small amounts of the virus.

Why It Might Be Ordered

Your healthcare provider may order this test if you have symptoms of CMV infection (such as fever, fatigue, or organ involvement), if you’re immunocompromised (e.g., due to HIV, chemotherapy, or organ transplant), or if you’re at risk for CMV complications (e.g., pregnant women or newborns). It’s also used to monitor treatment response.

How the Test Works

A small blood sample is drawn, and the plasma or serum is analyzed using a specialized probe that binds to CMV DNA. If the probe detects CMV genetic material, the test is positive, indicating active infection.

Preparation and Sample Collection

No special preparation is needed. You may have a blood draw at your doctor’s office or lab. The sample is processed quickly to detect CMV DNA within hours.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

CMV DNA Probe

Frequently asked questions

What does a positive result mean?
A positive result indicates you currently have an active CMV infection. This may require further evaluation or treatment, depending on your health status and symptoms.
Can I get this test at home?
No, this test requires a blood sample collected by a healthcare professional in a clinical setting. Home testing for CMV DNA is not available.
How soon will I get results?
Results are typically available within a few hours to a couple of days, depending on lab processing times. Your healthcare provider will discuss the results with you.
  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