Cytomegalovirus (CMV) DNA in Plasma/Serum
This test detects the presence of cytomegalovirus (CMV) genetic material in your blood or plasma. It helps monitor infection or assess risk during organ transplantation or immune-compromised states.
["The CMV DNA test helps track whether your body is fighting an active CMV infection or if the virus is present but inactive."]
Key facts at a glance
- LOINC
- 82189-2
- Short code
- CMV DNA CSF Ql NAA+n-prb
- Synonyms
- CMV DNA CSF Ql NAA+n-prb
- Category
- chemistry
- Sample
- csf
- Container
- Sterile tube
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- non-probe-amp-tar
- Specimen volume
- 1-2 mL
- Stability
- Immediate analysis required, Refrigerated: 1h
- Hemolysis max
- 200
- TAT
- 4–24 hours
- Order
- routine
Why This Test Is Done
Your healthcare provider may order this test if you have symptoms of CMV infection, such as fever, fatigue, or organ damage, or if you’re at higher risk—like after an organ transplant, during chemotherapy, or if you have a weakened immune system. It’s also used to check for CMV in pregnant women to prevent potential complications in the baby.
How the Test Works
A small blood sample is taken, and the plasma or serum is tested for CMV DNA using advanced laboratory techniques. These methods detect the virus’s genetic material even when it’s not causing symptoms yet.
What to Expect Before the Test
No special preparation is needed, but inform your provider about any medications, recent illnesses, or immune conditions that might affect results. Avoid alcohol or strenuous activity before the blood draw if instructed.
What the Results Mean
Positive results indicate active CMV infection, while negative results suggest no detectable virus. Follow-up tests may be needed to monitor progression or response to treatment.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
CMV DNA testing is critical for managing infections in high-risk patients. Early detection allows for timely treatment to prevent severe complications, such as organ damage or spread of infection. It’s especially important in transplant recipients, where CMV can threaten graft survival and immune recovery.
Short name
CMV DNA Test
Frequently asked questions
How long does it take to get results from this test?
Can I eat or drink before the blood draw for this test?
What does a positive CMV DNA test mean for my health?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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