What does this test include?
The combined test measures MxA, a protein that rises when certain antiviral defense pathways are activated, and CRP, a general marker of inflammation.
Why might it be ordered?
- As supplementary information in acute symptoms of infection.
- To assist clinical judgment of the type of immune response along with examination and other tests.
What sample is needed?
A healthcare professional collects a venous blood sample. Depending on the method, the laboratory uses serum or plasma.
How should you prepare?
Tell the laboratory about all medicines, hormone treatments, vitamins and supplements you take. Do not stop or change treatment unless your clinician tells you to. Follow any instructions about fasting and the time of collection.
How are the results reported?
Different combinations of MxA and CRP may point to a different pattern of inflammation but do not identify a specific causative agent. Your result is interpreted using the reference interval on the laboratory report and in the context of your symptoms, medical history and other test findings.
Sources and editorial status
This patient-facing text is an editorial draft. It should be approved by a laboratory physician before official publication.