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Utah Public Health Laboratory

Respiratory Virus Culture with DFA

Fee: Please refer to fee schedule

Ordering Recommendation



Monday - Friday


Tube/Shell Vial, FA staining


3-10 Days

Specimen Required

  • Collect: Bronchoalveolar lavage (BAL), nasopharyngeal aspirate, swab, or washing, or tracheal aspirate, sputum, throat, tissue (lung, etc.).
  • Specimen Preparation:
    • Fluid or Stool: Transfer to sterile, leak-proof container.
    • Swabs or Tissue: Place in viral transport media (M4)
  • Storage/Transport Conditions: Refrigerated. Specimen must be received in our lab within 72 hours of collection.
  • Unacceptable Conditions:Calcium alginate, dry, or wood swabs.
  • Remarks: Place each specimen in a separate, individually sealed bag.


Negative or Positive

Interpretive Data



Specimens showing CPE, but not staining positive for Influenza A, Influenza B, Adenovirus, Para 1, 2, or 3, or RSV will be sent for referral testing at the CDC.

Cross References