Description of the blood test: 

The HSV 1/2 IgM test is a laboratory study designed to detect the body’s immediate immune response to the Herpes Simplex Virus. IgM antibodies are the “first responders” of the immune system and typically appear shortly after the initial infection or during a significant reactivation of the virus. Detecting these antibodies is a critical diagnostic step for identifying an active or very recent viral process, especially when clinical symptoms like rashes or fever are present.

What does the analysis represent?

• Purpose: Qualitative detection of IgM antibodies to HSV-1 and HSV-2 in blood serum.
• Primary application: Diagnosis of primary herpes infection and identification of active viral replication.
• Performance: High-sensitivity enzyme immunoassay (ELISA) of a venous blood sample.

Recommendations for the test (General)

• Time: Recommended in the morning.
• Fasting: Observe a 4–8 hour fast before the draw.
• Rest: Spend 20 minutes in a calm state before the procedure.
• Important: IgM levels eventually decline after the acute phase, so the timing of the test is crucial for accuracy.

What can affect the results?

• Reactivation: In some people, IgM may not rise significantly during a repeat outbreak, making IgG or PCR more reliable.
• Cross-reactivity: Other acute infections can sometimes cause a non-specific rise in IgM levels.

When to take the test?

• Recommendations: Essential during the first appearance of painful blisters, unexplained fever with skin lesions, or when an acute viral process is suspected by a physician.
• Preparation: Standard preparation; avoid heavy food 24 hours prior.

How to interpret the results?

The interpretation of data is the exclusive responsibility of an infectious disease specialist or a urologist. A positive IgM result serves as a biological indicator of activity but is never a standalone diagnosis. The physician correlates the result with the physical examination and potentially PCR results. Only a specialist can determine if the current clinical picture requires acute antiviral treatment and how to prevent the infection from progressing.

Possible further investigations

• HSV 1/2 IgG: To see if the body has already begun developing long-term immunity.
• HSV PCR: For direct detection of viral DNA at the site of infection.
• Consultation with a Urologist: For rapid management of acute genital symptoms.

When does the next step make sense?

An active herpes infection requires prompt medical guidance to reduce discomfort and healing time. The next step is a consultation to establish a treatment plan that addresses the acute phase and protects your overall health.

👉 If necessary, you can discuss the test results with our specialized — urologist (Doctors – TAMC).