Collection Information

Collection Instruction

Blood in plain red. Also acceptable: lavender (EDTA), pink (K2EDTA), or green sodium or lithium heparin. Separate serum or plasma from cells ASAP or within 2 hours of collection. Timing of specimen collection: Pre-dose (trough) draw- At steady state concentration.

Preferred Specimen

Container:

Red/Lavender (EDTA)/Pink (K2EDTA)/Green (sodium/lithium heparin) Tube

Volume:

1.0 mL

Specimen Stability

6 Days

Process Information

CPT Code(s)

80201

Turnaround Time

72 Hours

Reference Range

N/A

Reject Criteria

Specimens that exceed stated stability, unlabeled/mislabeled/mismatched specimens, specimens submitted in leaking containers, specimens collected in serum or plasma separator tubes, grossly hemolyzed specimens