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Opiates (Low Dose) - Free (Unconjugated) Screen, Blood Test (3237B)

Analysis Code	3237B
Test Name	Opiates (Low Dose) - Free (Unconjugated) Screen, Blood
Test Includes	Buprenorphine - Free [LC-MS/MS], Butorphanol - Free [LC-MS/MS], Hydromorphone - Free [LC-MS/MS], Morphine - Free [LC-MS/MS], Nalbuphine - Free [LC-MS/MS], Naloxone - Free [LC-MS/MS], Naltrexone - Free [LC-MS/MS], Norbuprenorphine - Free [LC-MS/MS]
Compound Synonym(s)	Buprenex® Buprenorphine Metabolite Depade® Dilaudid® Hydrocodone Metabolite Nalorex® Narcan® Nubain® ReVia® Stadol® Trexan® Vivitrol®
Purpose	Exclusion Screen
Category	Narcotic Analgesic
Method(s)	High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS)
Specimen Requirements	2 mL Blood
Transport Temperature	Refrigerated
Specimen Container	Lavender top tube (EDTA)
Special Handling	None
Light Protection Required	Not Required
Stability	Room Temperature: 7 day(s) Refrigerated: 10 day(s) Frozen (-20 °C): 2 day(s)
Rejection Criteria	Received Frozen.
Day(s) Test Set-up	[LC-MS/MS] Monday Wednesday Friday 3 days
Suggested CPT Code	[LC-MS/MS] 80100
Reflex Testing (when required, addl' fee may apply)	5590B - Opiates (Low Dose) - Free (Unconjugated) Confirmation, Blood

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