Virus, Direct Detection DFA, Varicella Zoster Virus (VZV)

CPT: 87290
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  • Direct Detection by DFA, Varicella Zoster Virus

Test Includes

Direct microscopic examination (nonculture) of virus-infected cells. Quality of specimen may be evaluated.

Special Instructions

Submit one specimen per test requested. Specify the exact specimen source/origin (eg, skin lesion). Indicate a specific test number on the request form.

Expected Turnaround Time

1 - 3 days

Related Documents

Specimen Requirements


Impression smears of tissues, lesion scrapings and swabs, upper respiratory tract swabs


Two slides per virus


Plain glass slide, no fixative


Submit two thinly made air-dried slides. Do not use spray fixative.

Storage Instructions

Refrigerate or maintain specimen at room temperature.

Causes for Rejection

Specimen received after prolonged delay in transport (usually more than 72 hours); unlabeled specimen or name discrepancy between specimen and request label; broken or badly scratched slides; fixative used on slides; bacterial swab transport

Test Details


Rapid diagnosis of varicella-zoster virus


Direct fluorescent antibody (DFA)

Reference Interval

No virus detected


Drew WL. Controversies in viral diagnosis. Rev Infect Dis. 1986 Sep-Oct; 8(5):814-824 (review). 3024292
Drew WL. Diagnostic virology. Clin Lab Med. 1987 Dec; 7(4):721-740 (review). 3319366
Smith TF. Rapid methods for the diagnosis of viral infections. Lab Med. 1987; 18:16-20.


Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
185009 Virus, Varicella Zoster Ag,DFA 5882-6 185009 Virus, Varicella Zoster Ag,DFA 5882-6

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