Sign in →

Test Code LAB9240 Influenza (Flu) A/B Rapid

Important Note

This test is NOT performed at Spectrum Health Regional Laboratory (SHRL, 35 Michigan, Grand Rapids, this includes the Medical Center, Butterworth, HDVCH, Meijer Heart and Lemmon Holton)

Please direct questions and specimens to one of the performing locations listed in the "Performing Department Laboratory Location" field below.

Per CDC recommendation, this test is only performed during times of high flu incidence.

Test Name Alias

Flu A/B Ag Rapid | Influenza A/B Antigen Rapid | 4626

Icons & Photos

 3-mL UTM/Swab set (UTM medium with Regular Flocked Swab)


Specimen Requirements

Submit only one of the following specimens:


Specimen Type: Nasopharyngeal swab (NP)
Container/Tube: 3-mL UTM/Swab set (UTM medium with Regular Flocked Swab)
Collection Instructions:

  1. Tilt the head of the patient, gently insert the swab through one of the nostrils and into the nasal passage.
  2. Rotate the swab tip several times across the mucosal surface.
  3. Remove the swab and insert into the red top tube of viral transport medium (UTM) immediately.
  4. Push the swab into the tube and break the plastic shaft swab at the break line.
  5. Replace cap and screw on tightly.
  6. Label specimen with at least 2 patient identifiers (usually name and date of birth)


Specimen Type: Nasopharyngeal wash/aspirate (CLIA waived)
Container/Tube: Sterile container
Collection Instructions: If possible, obtain specimen during the acute phase of the illness during the greatest amount of viral shedding.

  1. Nasopharyngeal wash-volumes of 2-3 mL or less are recommended. (Excessive wash volumes may decrease the sensitivity of the assay).
  2. Collect specimen in a sterile container.
  3. Label specimen with at least 2 patient identifiers (usually name and date of birth)
  4. Transport within 24 hours.

Specimen Transport Temperature

Refrigerate or on ice

Special Instructions

Dry swabs will be rejected.

Specimen Stability

Refrigerate: 24 hours

Laboratory Retention: 3 days

Test Frequency

Available 24 hours, usual TAT 4 hours

Reference Range

Influenza A: Negative

Influenza B: Negative

Performing Department


Performing Department Laboratory Location

Spectrum Health Big Rapids Laboratory, Big Rapids, MI
Spectrum Health Blodgett Laboratory, Grand Rapids, MI
Spectrum Health Gerber Laboratory, Fremont, MI
Spectrum Health Kelsey Laboratory, Lakeview, MI
Spectrum Health Ludington Laboratory, Ludington, MI
Spectrum Health Pennock Laboratory, Hastings, MI
Spectrum Health Reed City Laboratory, Reed City, MI
Spectrum Health United Laboratory, Greenville, MI
Spectrum Health Zeeland Laboratory, Zeeland, MI


Enzyme immunoassay (EIA)


87804 x2

CDM Code


Epic Test ID


Interface Order Alias


Additional Information

While influenza prevalence in the community remains low, please order Influenza A/B PCR.

Reviewed Date