5 - 25 ng/mL
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Days Test Performed
5 - 7 days
Soft Order Code
Mayo FBENZ (90092) (MedTox 894)
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Offsite Collection Instructions
Collect trough specimen in a green top or red top tube; do not use SST tube. Centrifuge, aliquot plasma or serum into a plastic vial and refrigerate.
SST or PST tube not acceptable.
2 mL plasma or serum
0.3 mL plasma or serum
Test sent to Mayo Medical Laboratories; performed by MedTox Laboratories.