The HSV-2 IgM test detects early antibodies produced during initial infection but is unreliable due to high false-positive rates and inability to differentiate between primary and recurrent infections. Its diagnostic utility is limited, making it less favored compared to more specific tests like HSV-2 IgG or PCR. Clinical correlation and confirmatory testing are essential for accurate diagnosis.

The HSV-2 IgM test is generally unreliable for diagnosing acute HSV-2 infections due to high false-positive rates and inability to distinguish between primary and recurrent infections. False negatives can also occur, limiting its diagnostic utility. Confirmation with more specific tests like HSV-2 IgG or PCR is recommended for accurate assessment.

The HSV-2 IgM test typically reports results as positive, negative, or equivocal based on the presence of IgM antibodies. Specific index values or cut-off ranges are determined by the testing laboratory. Interpretation should be approached cautiously due to the test's limitations and potential for false positives.

A positive HSV-2 IgM test may suggest a recent infection but often results in false positives, necessitating confirmation with more specific tests. Negative results do not reliably exclude infection, especially in later stages. Accurate interpretation requires clinical correlation and additional testing, such as HSV-2 IgG or PCR.

The HSV-2 IgM test typically requires a blood sample, collected through venipuncture. The blood is then processed to obtain serum or plasma, which is tested for the presence of HSV-2 IgM antibodies. This sample type helps detect early-stage immune response to HSV-2.