One 7.5 mL serum separator tube (SST). Also acceptable: One 4 mL green top tube (heparin), or one 4.5 mL light green plasma separator tube (PST).
Centrifuge and separate SST or PST within 2 hours of collection and transport in original tube. Centrifuge green top tube within 2 hours of collection, separate plasma from cells and pour into a plastic vial for transport. Refrigerate. Note last dose date and time. Freeze if specimen cannot be assayed within 48 hours.
48 hours refrigerated.
0.5 mL serum or plasma.
150 µL serum or plasma.
Refrigerated, or frozen on dry ice.
Refer to drug manufacturer’s package insert or the Physicians’ Desk Reference for Carbamazepine measurement sampling times.
Refrigerated specimen received in laboratory more than 48 hours after collection.