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Vanderbilt Pathology Laboratory Services

Test Directory



OPIATES CONFIRMATION (GCO)

Department: Toxicology
Test Synonym(s): GCO
Test Components: Dihydrocodeine,Codeine,Morphine,Hydromrphone,Hydrocodone,Oxycodone, Oxymorphone
CPT Codes: 80102
Methodology: GC/MS Analysis
Reference Range: Codeine, Dihydrocodeine, Hydrocodone, Hydromorphone, Morphine, Oxycodone and Oxymorphone - Cut off is 50 ng/mL. For Opioids such as Meperidine or Propoxyphene, see Miscellaneous Drug Confirmation (Test Code: MDC)
Tube Type: Routine urine container
Specimen: Urine
Pediatric Requirements: 1 mL
Volume: 5 mL
Minimum Volume: 1 mL
Temperature: Refrigerated if not delivered to the lab immediately
Stability: Refrigerated: 7 days, frozen at -20 C: 6 months
Reasons for Rejection: QNS
Days Performed: Monday - Friday. Not available STAT
Times Performed: During first shift
TAT: 48 - 72 hours
Special Instructions: Send to the lab immediately. For Opioids such as Meperidine or Propoxyphene, see miscellaneous drug confirmation (test code MDC)

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