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 patient compliance; monitor therapeutic drug levels.
0.5 - 1.2 meq/L; critical value: >1.5 meq/L
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Collect specimen in an SST tube. Samples are most commonly drawn 12 hours after the last dose.
Collect specimen in an SST tube. Centrifuge, aliquot serum into a plastic vial as soon as possible, and refrigerate. Samples are most commonly drawn 12 hours after the last dose.