Varicella Testing

Varicella Testing is a topic covered in the Davis's Lab & Diagnostic Tests.

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Synonym/Acronym:
Varicella-zoster antibodies, chickenpox, VZ.

Rationale
To assist in diagnosing chickenpox or shingles related to a varicella-zoster infection and to assess for immunity.

Patient Preparation
There are no food, fluid, activity, or medication restrictions unless by medical direction.

Normal Findings
Method: Enzyme immunoassay.

IgM and IgGInterpretation
Negative0.89 index or lessNo significant level of detectable antibody
Indeterminate0.9–1 indexEquivocal results; retest in 10–14 days
Positive1.1 index or greaterAntibody detected; indicative of recent immunization, current or recent infection

Critical Findings and Potential Interventions
N/A

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Synonym/Acronym:
Varicella-zoster antibodies, chickenpox, VZ.

Rationale
To assist in diagnosing chickenpox or shingles related to a varicella-zoster infection and to assess for immunity.

Patient Preparation
There are no food, fluid, activity, or medication restrictions unless by medical direction.

Normal Findings
Method: Enzyme immunoassay.

IgM and IgGInterpretation
Negative0.89 index or lessNo significant level of detectable antibody
Indeterminate0.9–1 indexEquivocal results; retest in 10–14 days
Positive1.1 index or greaterAntibody detected; indicative of recent immunization, current or recent infection

Critical Findings and Potential Interventions
N/A

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