Test Details
Methodology
Mass spectrometry
Result Turnaround Time
4 - 7 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Use
This test is used to confirm the presence of naltrexone. Please note this test is designed specifically for monitoring patients who are on Suboxone™/buprenorphine or naltrexone only. This testing should not be used for monitoring chronic pain patients (medical drug monitoring) or methadone medication assisted treatment.
Limitations
This test was developed and its performance characteristics determined by Labcorp. It has not been cleared or approved by the Food and Drug Administration.
Specimen Requirements
Specimen
Urine
Volume
30 mL
Minimum Volume
15 mL
Container
Urine bottle
Collection Instructions
Random urine
Stability Requirements
• Room temperature: 5 days
Storage Instructions
Submission/transport (<3 days): Room temperature. For storage beyond three days, specimen should be refrigerated or frozen.
Causes for Rejection
Insufficient volume; no ID on container; urine from preservative tube
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 702518 | Naltrexone, MS, Ur, MAT | 18334-3 | 702542 | OPIATE ANTAGONIST | 3879-4 | |
| 702518 | Naltrexone, MS, Ur, MAT | 18334-3 | 702543 | Naltrexone | 18334-3 | |
| Order Code | 702518 | |||||
| Order Code Name | Naltrexone, MS, Ur, MAT | |||||
| Order Loinc | 18334-3 | |||||
| Result Code | 702542 | |||||
| Result Code Name | OPIATE ANTAGONIST | |||||
| UofM | ||||||
| Result LOINC | 3879-4 | |||||
| Order Code | 702518 | |||||
| Order Code Name | Naltrexone, MS, Ur, MAT | |||||
| Order Loinc | 18334-3 | |||||
| Result Code | 702543 | |||||
| Result Code Name | Naltrexone | |||||
| UofM | ||||||
| Result LOINC | 18334-3 |