If the patient has a white blood cell (WBC) count of >50,000, for chemistry testing that includes potassium, the sample should be collected in a gold serum separator (SST) tube and not a Lt green plasma separator (PST) tube.
Immediately following collection, mix sample thoroughly by gentle inverting 8 - 10 times to prevent clotting
Spin within two (2) hours of sample collection
Lt green plasma separator (PST)
Immediately following collection, thoroughly mix sample by gently inverting 5 times
Gold serum separator (SST) tube
Refrigerated (preferred) - 7 days
See individual tests
See individual tests