Assessing toxicity or abuse.
Therapeutic: 2-10 mcg/mL; Toxic: Greater than or equal to 20 mcg/mL.
2 - 3 weeks
Collect specimen in Red top or Green top tube; do not use SST/PST tube. Centrifuge and aliquot serum/plasma into a plastic vial. Send to Specimen Processing refrigerated.
Test sent to Mayo Medical Laboratories; performed by NMS Labs.