The Powassan virus polymerase chain reaction result may remain positive for a longer time in urine than in blood, serum, and cerebrospinal fluid (7 days or more).
Immediately following collection, mix sample thoroughly by gentle inverting 8 - 10 times, to prevent clotting
Send whole blood specimen in original tube. Do not aliquot.
Lavender (EDTA), 4mL
Refrigerated (preferred) - 7 days
Frozen - 7 days
Real-Time Polymerase Chain Reaction (PCR)