Orthopoxvirus Nucleic Acid Test (Serum/Plasma)
This test detects the genetic material (nucleic acid) of orthopoxviruses, including variants like smallpox or cowpox, in your blood or plasma. It helps diagnose infections caused by these viruses.
["This test may be used if you have symptoms of a poxvirus infection or exposure risk."]
Key facts at a glance
- LOINC
- 99120-8
- Short code
- Oropouche virus NAb Titr Spec Nt
- Synonyms
- Oropouche virus NAb Titr Spec Nt
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- neut
- 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 looks for the presence of orthopoxvirus genetic material (nucleic acid) in your blood or plasma. Orthopoxviruses are a group of viruses that include smallpox, cowpox, and monkeypox. This test uses molecular methods to identify if these viruses are actively replicating in your body.
Why It Might Be Ordered
Your healthcare provider may order this test if you have symptoms such as rash, fever, or lymphadenopathy (swollen lymph nodes), or if you have been exposed to someone with a known orthopoxvirus infection. It can also be used in outbreak investigations or for monitoring high-risk individuals.
Sample Collection and Preparation
A blood sample is drawn from a vein, typically in your arm. The blood is then processed to separate the plasma or serum, which is tested for the presence of orthopoxvirus nucleic acid.
What to Expect Before the Test
There are no special preparations needed for this test. You may have some mild discomfort from the needle, but it usually goes away quickly. If you are taking blood-thinning medications, inform your healthcare provider beforehand.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Detection of orthopoxvirus nucleic acid in the blood or plasma is critical for confirming a diagnosis of orthopoxvirus infection early. This can guide treatment decisions, such as antiviral therapy, and help prevent the spread of infection. Early identification is particularly important for high-risk groups, such as immunocompromised individuals or those exposed to bioterrorism agents.
Short name
Orthopoxvirus NA
Frequently asked questions
How soon can I expect results?
What does a positive result mean?
Can I have this test if I have a mild cold or flu?
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