|
|
Lab Dept:
|
Chemistry
|
Test Name:
|
FENTANYL LEVEL
|
General Information
|
Lab Order Codes:
|
FEN
|
Synonyms:
|
Innovar®, China white, Sublimaze®
|
CPT Codes:
|
83542 - Column chromatography/mass spectrometry, analyte not elsewhere specified; quantitative, single stationary and mobile phase
|
Test Includes:
|
Fenatanyl level reported in ng/mL.
|
Logistics
|
Test Indications:
|
Monitoring Fentanyl (narcotic analgesic) levels
|
Lab Testing Sections:
|
Chemistry - Sendouts
|
Referred to:
|
MedTox Laboratories (Test# 163)
|
Phone Numbers:
Minneapolis:
Saint Paul:
|
|
612-813-6280
|
651-220-6550
|
Test Availability:
|
Daily, 24 hours
|
Turnaround Time:
|
1 day
|
Special Instructions:
|
N/A
|
Specimen
|
Specimen Type:
|
Blood
|
Container:
|
Green top (Li Heparin) or Red top tube
|
Draw Volume:
|
9 mL (Minimum: 2 mL) blood
|
Processed Volume:
|
3 mL (Minimum: 0.7 mL) serum/plasma
Note: Submission of the minimum volume results in an elevated reporting range and inability to repeat analysis.
|
Collection:
|
Routine venipuncture
|
Special Processing:
|
Lab Staff: Centrifuge specimen, remove serum/plasma aliquot into a screw-capped round bottom plastic vial. Store and ship at refrigerated temperatures. Forward promptly.
|
Patient Preparation:
|
None
|
Sample Rejection:
|
Mislabeled or unlabeled specimens
|
Interpretive
|
Reference Range:
|
Therapeutic range for analgesia: 1 - 3 ng/mL
|
Critical Values:
|
>34 ng/mL without respiratory assistance
Observed concentrations during respiratory - assisted anesthesia: <200 ng/mL
|
Limitations:
|
Reporting limit: 0.1 ng/mL
|
Methodology:
|
Immunoassay (IA)
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
|
References:
|
MedTox Web Page (May 2010)
|
Updates:
|
5/6/2010: CPT update, previously reported as 83925.
|
