Varicella-zoster virus contact immunity assessment


In cases of clinically or laboratory diagnosed chicken pox or exposed herpes zoster, it may be necessary to determine the immune status of contacts, particularly in pregnant women and those who are immunocompromised. A contact�s VZV IgG status is determined using an enzyme linked fluorescent assay (ELFA). If a negative result is obtained, VZV immune globulin can be administered as soon as possible, to prevent or limit disease.

Also known as

Chickenpox contact, shingles contact, herpes zoster contact

Request a test

To request this test please send sample with a request providing patient ID (three identifiers), specimen information, assay required, relevant clinical details and sender information. Before sending sample please read details on requesting and labelling by clicking on the link. Please also refer to any additional information provided for this test.

Additional information

Not applicable

Sending address

Microbiology, Virology and Infection Control Level 4, Camelia Botnar Laboratories Great Ormond Street Hospital for Children Great Ormond Street London WC1N 3JH DX number: DX6640203 DX Exchange: Bloomsbury 91WC

Laboratory service

Microbiology, Virology and Infection Control

Sample requirements

Serum (2ml in clotted blood tube)

Reference range

Not applicable

Turnaround time

3 hours

Disease / group

Viral immunity


Upon request

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Please call in advance to ensure prompt specimen processing

Microbiology, Virology and Infection Control

Our laboratory performs a wide range of routine and specialist investigations in Bacteriology, Virology and PCR.

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