... Do not interchange reagents from different lots or use test kit beyond expiration date.4. Icteric, lipemic, hemolysed, ... phlebotomist collect whole blood into a purple, blue or green top collection tube (containing EDTA, citrate or heparin ... phlebotomist collect whole blood into a purple, blue or green top collection tube (containing EDTA, citrate or heparin ... result in 10 –20 minutes. PSA Elisa Test Kit