Specimen Requirements
Collection
Collect specimen in a red top tube; do not use SST tube. Centrifuge, aliquot serum into a plastic vial and freeze. For maximum clinical significance, collect a Peak specimen within 15 minutes after the end of an I.V. infusion or 90 minutes after oral intake.
Collection Instructions
Collect blood in a red top tube. Spin and aliquot into a screw capped plastic tube. Freeze and send to Specimen Processing. Have ordering provider fully list: drug dose amount, frequency, method, and date and time of last dose prior to draw.
Alternate Specimen
Red top tube is preferred. Green top tube is acceptable.
Rejection Criteria
SST tube not acceptable.
Normal Volume
2 mL serum
Minimum Volume
0.5 mL serum