3 - 5 days
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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.
Collect blood in a red top or green top tube. Centrifuge, aliquot serum or plasma into a plastic vial and refrigerate.