Skip to content

Cytomegalovirus (CMV) Genotype by Nucleic Acid Amplification Test (Serum/Plasma)

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

This test identifies the genetic type of the cytomegalovirus (CMV) present in your blood. It helps determine if you have a specific strain of CMV that may affect how your body responds to infection or treatment.

Quick summary

["This test helps guide treatment decisions for CMV infection."]

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

Key facts at a glance

LOINC
72852-7
Short code
CMV resis Pnl Islt Genotyp
Synonyms
CMV resis Pnl Islt Genotyp
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
genotyping
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

Why Is This Test Done?

Your healthcare provider may order this test if you have a weakened immune system (such as from HIV/AIDS, chemotherapy, or organ transplant) and are at risk for CMV infection. It may also be used to monitor treatment response or assess viral load in certain clinical scenarios.

What Does the Test Measure?

The test detects and differentiates between genetic sequences of CMV. This helps determine if the virus is active or latent and may inform treatment strategies, such as selecting antiviral medications that target specific CMV strains.

Sample Collection and Preparation

A blood sample is drawn from a vein in your arm. The blood is processed to separate serum or plasma, which is then analyzed for CMV genetic material using advanced laboratory techniques.

What to Expect Before the Test

No special preparation is needed for this test. However, if you are on blood-thinning medications, inform your healthcare provider before the test to ensure proper precautions are taken.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

CMV Genotyping

Frequently asked questions

What are the possible reasons for ordering this test?
This test is typically ordered if you have a weakened immune system and are at risk for CMV infection, such as after an organ transplant, during chemotherapy, or if you have HIV/AIDS. It may also be used to evaluate treatment response or viral load in specific clinical situations.
How long does it take to get the results of this test?
Results are usually available within 1 to 3 business days, depending on the laboratory and testing protocols. Your healthcare provider will discuss the results with you.
Is there any risk or discomfort associated with this test?
The blood draw may cause mild discomfort or bruising at the site, but there are generally no serious risks. If you have a hard time with blood draws, let your healthcare provider know to discuss alternatives.
  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