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Lab Test Dictionary

Influenza A/B, RSV and SARS with Reflex to RP2


PCR (LIAT/ePlex)


Flu A; Flu B; RSV; SARS; COVID-19; COVID; Coronavirus; RP2

Specimen Type

NP Swab

Performing Lab

RCHSD Microbiology

Epic ID


Lab Test Days

As Received

Standard TAT

2 Hours from receipt in lab if no reflex testing; 4 Hours if reflex testing needed

Stat TAT

1 hour for RSV/Influenza. 3 hours if reflex panel

Collection Information

Specimen Required

Nasopharyngeal (NP) swab in Viral Transport Media (VTM)

Container Type

Viral Transport Media (VTM)

Collection Instructions

Insert swab into posterior nasopharynx and rotate; repeat with other nostril. Place swab into separate Viral Transport Media (VTM). Must collect NP swabs only.

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Refrigerated: 7 days; Frozen: 1 month

Rejection Criteria

Leaked specimen; Unlabeled or mislabeled specimen; Swab other than NP source

Test Volume Required

Nasopharyngeal (NP) swab in Viral Transport Media (VTM)

Minimum Test Volume

Nasopharyngeal (NP) swab in Viral Transport Media (VTM)

Processing Instructions

Receive specimen in lab and deliver promptly to Micro bench staff. DO NOT leave in Micro bucket.

Included Tests

Influenza A/B, RSV, and SARS-CoV-2. Reflex testing includes Adenovirus, Coronavirus (229E, HKU1, NL63, OC 43. Does not differentiate), SARS-CoV-2, Human Metapneumovirus, Human Rhinovirus/Enterovirus, Influenza A (and subtypes H1, H1-2009, H3), Influenza B, Parainfluenza (Differentiates 1, 2, 3, and 4) RSV A, RSV B, Chlamydia pneumoniae, and Mycoplasma pneumoniae.

CPT Codes

87631, 87635; if reflex performed 87633 and 87581