5 - 10 days
Looking to order a test?
We’ve provided helpful links to make ordering easy.Find a Requisition
All specimens should be accompanied by a requisition.Submitting Specimens
Learn about how to properly label and where to ship specimens.Order Kits and Supplies
MLabs provides all the supplies necessary for the collection of specimens.Test FAQ
Visit our provider FAQ and learn about common questions to ordering tests.
Monitor therapeutic drug level.
10 - 30 ng/mL
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Collect specimen in a red top, lavender top (EDTA), or green top (heparin) tube; do not use SST tube. Centrifuge, aliquot serum or plasma into a plastic vial and refrigerate.