Infectious Disease Laboratories:Virology
Nasal Washings, or 2 FLOCKED NPH swabs
1.5 mL wash or aspirate in sterile container plus 0.5 mL wash or aspirate in viral transport medium (M4) OR
Flocked NPH swabs: send one swab in culturette and one swab broken off into viral transport medium (M4).
Cause for rejection:
Specimen dry, non sterile container or incorrect swab (do not use NPH wire swab), QNS, or no portion of specimen in M4 medium for back-up Respiratory Virus Isolation.
Specimens in M4 must be sent on ice ASAP to lab. Specimens MUST
contain respiratory epithelial cells. Respiratory Virus Isolation is performed if rapid is negative or contains insufficient respiratory cells for direct stain. A negative result does not rule out viral infection. Positive results will be called.
OC Power Word:
Reference Range: Negative for Influenza A and Influenza B virus