3 - 5 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.
Gas Chromatography/Flame Ionization Detection (GC-FID)
Assessing toxicity or monitoring possible abuse.
8.0 - 17.0 mcg/mL; Critical Value: 30 mcg/mL.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Collect blood in a red top or green top tube. Centrifuge, aliquot serum or plasma into a plastic vial and refrigerate.