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🧪 What is Varicella Zoster IgM?

The Varicella Zoster Virus (VZV) IgM test detects IgM antibodies specific to VZV, which indicate a recent or acute infection with the virus. VZV causes chickenpox (primary infection) and shingles (reactivation).

❓ Why is the Test Done?

To:

Diagnose acute or recent varicella (chickenpox) infection
Confirm reactivation (shingles) in suspected cases
Differentiate between past immunity and active infection
Evaluate infection in immunocompromised patients or pregnant women

📊 Normal Range / Interpretation

Result	Interpretation
Negative	No detectable IgM; no recent infection
Positive	Presence of IgM; indicates recent or active infection

📈 Interpretation of Results

Result	Clinical Significance
Positive IgM	Acute or recent VZV infection (chickenpox or shingles)
Negative IgM	No current active infection; past infection or immunity possible

🧠 Associated Conditions

Condition	Details
Varicella (Chickenpox)	Primary VZV infection causing vesicular rash
Herpes Zoster (Shingles)	Reactivation of latent VZV causing painful rash
Immunocompromised states	Increased risk of severe or disseminated infection

🔄 Related / Follow-Up Tests

Varicella Zoster IgG – indicates past infection or immunity
PCR for VZV DNA – confirms active infection in lesions
Clinical examination – rash morphology and distribution

✅ Fasting Required?

Test	Fasting Required
Varicella Zoster IgM	❌ No

📝 Summary Table

Parameter	Details
What	Detects IgM antibodies indicating recent VZV infection
Why	Diagnose acute chickenpox or shingles
Normal Result	Negative; no recent infection
Positive Result	Positive; acute or recent infection
Associated Conditions	Chickenpox, shingles, immunocompromised infections
Follow-up Tests	IgG, PCR, clinical assessment
Fasting Required	❌ No

Varicella Zooster IgM