RSV Rapid Antigen

Abbrev Code:RSAG   
Order Code:LAB3722Order Name:RSV Rapid Antigen
Synonyms:Respiratory Syncytial Virus Antigen; Direct EIA; RSAG
Methodology:Fluorescent immunoassay
CPT Codes: 87807 x1
Test Includes:Detection of RSV by rapid antigen detection.
Turnaround Time:During respirator season, results are reported the same day as receipt in the lab.
Special Instructions:This test is performed routinely during respiratory virus season ONLY, approximately November-April. False-positive (and true-negative) results are more likely to occur when disease prevalence in the community is low, which is generally at the beginning and end of the respiratory season during the summer. If clinically necessary, patients with negative rapid RSV antigen results can have the three virus PCR (Flu AB RSV) test requested.
Associated Links:

IDDL (Microbiology/Virology) Collection Container Guidelines, Nasopharyngeal Swab Collection, Nasal Wash Procedure

Collection Instructions

Specimen:1 nasopharyngeal swab, nasopharyngeal wash, in universal transport media
Container:BD Universal Transport Media
Collection Instructions:Nasopharyngeal Wash: See Associated Links for Nasal Wash policy. Or, using 2-3 mL nonpreserved saline, wash nasopharynx using bulb, or syringe and butterfly tubing; immediately aspirate back. Send specimen to laboratory as soon as possible.

Swabs only: If sending via PTS, the specimen must be placed in a lab specimen bag with an absorbent pad and then placed into another lab specimen bag.
Causes for Rejection:Washes of less than 1 mL volume; excessively blood specimens; calcium alginate swabs; charcoal Amies swabs, tissue specimens, bronchial specimens, throat swabs, nasal swab or any specimens collected in Eswab transport.

Processing and Shipping

Specimen Processing:Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature. Must arrive within 24 hours.
Test Performed at or Referral Lab Infectious Diseases Diagnostic Laboratory  (Range, UMMC-East Bank, Lakes, Ridges, Northland, Southdale, UMMC/UMMCH-West Bank, Clinics, Grand Itasca)


Reference Range:Negative
Use:Diagnosis of RSV infection.

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