Diagnostic Test Directory

Microbiology Laboratory

Rapid Strep Antigen (Group A Strep.)

  • LIS Mnemonic: RSA

    Collect

    Throat or tonsil specimen collected via double swab culture set

    Volume Required

    1 double swab culture set

    Minimum Required

    1 double swab culture set

    Transport

    Send to the lab immediately at room temperature

    Stability

    Specimens stable up to 2 hours after collection

Days Performed

Daily

Reported

60 minute expected turn around time from receipt in lab

Reflex Testing

If antigen test is negative, "Culture, R/O Strep A" is performed (CPT 87081)

CPT

87430

Methodology

EIA ; Culture for negative antigen specimens