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Influenza A and B by Direct Immunoassay

Test ID: 


CPT code:

87804 (x2)


Flu A and B

Clinical Use:

Confirm the diagnosis of influenza type A or type B infection. This is a differentiated test and, therefore, will distinguish influenza type A from influenza type B.

Specimen Type:

Nasopharyngeal (NP) swab in viral transport medium or NP wash or aspirate

Requested Volume: 

2 to 3 mL NP wash, 0.5 mL NP aspirate dispersed in at least 2 to 3 mL transport medium or saline, or swab

Minimum Volume: 

2 mL NP wash, 0.5 mL NP aspirate dispersed in at least 2 to 3 mL transport medium or saline

Container Type: 

Viral, Chlamydia, or Mycoplasma culture transport, or other appropriate transport medium, sterile leakproof container

Storage Instructions:


Rejection Criteria

Bacterial swab specimen; specimen received in grossly leaking transport container; dry specimen; specimen submitted in fixative or additive; specimen received in expired transport media or incorrect transport device; inappropriate specimen transport conditions; specimen received after prolonged delay in transport (usually more than 72 hours); specimen stored or transported at room temperature; wooden shaft swab in transport device; unlabeled specimen or name discrepancy between specimen and request label

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