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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Influenza A and B and RSV Detection


CPT Code(s): 87631

Methodology: PCR

Clinical Significance: Detection of Influenza A (including novel H1N1), Influenza B and Respiratory Syncytial Virus (RSV) in respiratory specimens.

Days Performed: See Additional Information.

Turnaround Time: Routine: 1 - 3 days.

Specimen Requirements

Specimen: Nasopharyngeal Minitip swab (flocked swab)

Collection Instructions: Obtain UTM from UWHC Central Services, item #4010148.

Collection Container: Preferred: UTM(Universal Transport Medium)
Also Acceptable: Refrigerated M4 Transport Medium

Specimen Transport: Transport specimen to UWHC Microbiology Laboratory (B4/231) on coolant pack.

Unacceptable Criteria: Swabs other than nasopharyngeal flocked swabs are not acceptable.

Room temperature M4 (M4RT) is not acceptable.

Stability: Ambient: 2 hours
Refrigerated: 3 days
Frozen: Not acceptable


Expected Results:


Test Limitations:

Proper collection and transport of specimen is of critical importance in direct detection.

Additional Information:

Refer to Nasopharyngeal Swab Collection for Respiratory Virus Testing for proper collection.


FluMist vaccine can result in a false positive PCR for influenza for up to 21 days after administration.


Specimens should not be submitted for test of cure.


Do not order simultaneously with Respiratory Virus Panel, PCR (RVP).


During peak respiratory virus season, test will be offered daily. During off-season test is performed less frequently, varying from 2-3 times per week.


This test was performed using a modification of an FDA approved method.  The performance characteristics of this test were determined by the UWHC Clinical Laboratories and meet the standards for clinical testing.

Swine Flu

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