Yes. Naltrexone is one of the 76 compounds in the LabX LC-MS/MS confirmation panel, reported as detected at or above 10 ng/mL. Naltrexone is not one of the 12 lines on the LabX 12-panel screen. It is identified by adding laboratory confirmation, which tests for all 76 compounds on the panel.
Naltrexone is an opioid antagonist that blocks opioid receptors for a sustained period. The body converts it into 6-beta-naltrexol.
Also known as or found in: Vivitrol.
Naltrexone is prescribed to help treat alcohol use disorder and, after detoxification, opioid use disorder, as tablets or a monthly injection.
Naltrexone is measured by liquid chromatography with tandem mass spectrometry (LC-MS/MS), which separates the compounds in a sample and identifies each one by its mass. That is different from a rapid screen, which reacts to a family of drugs and can occasionally react to a related substance. The laboratory reports Naltrexone as detected when its concentration is at or above the cut-off of 10 ng/mL, within a reportable range of 10β5,000 ng/mL. It is one of 5 compounds in the opioid treatment and reversal family on the 76-drug confirmation panel.
The laboratory's confirmation report lists an approximate detection window of 4-6 hours for Naltrexone. Treat that as a rough guide only: how long any compound stays measurable varies with the amount taken, how often it is used, body composition, metabolism, kidney and liver function, and hydration. A laboratory result cannot be used to work out when a substance was taken.
Naltrexone is not one of the 12 lines on the LabX 12-panel screen. It is identified by adding laboratory confirmation, which tests for all 76 compounds on the panel.
Naltrexone itself leaves the body relatively quickly; its metabolite 6-beta-naltrexol is often the better indicator of recent use, which is why both are measured.
Medicines used to treat opioid and alcohol use disorder or to reverse an overdose, with their metabolites, as monitored in treatment programs.
Yes. Naltrexone is one of the 76 compounds in the LabX LC-MS/MS confirmation panel, reported as detected at or above 10 ng/mL. Naltrexone is not one of the 12 lines on the LabX 12-panel screen. It is identified by adding laboratory confirmation, which tests for all 76 compounds on the panel.
LabX reports Naltrexone as detected at or above 10 ng/mL, and the method's reportable range is 10β5,000 ng/mL. A result below the cut-off is reported as not detected; it does not prove none was present.
The laboratory lists an approximate window of 4-6 hours, but it varies with dose, frequency of use, metabolism and hydration, and cannot be used to tell when something was taken.
Naltrexone is not one of the 12 lines on the LabX 12-panel screen. It is identified by adding laboratory confirmation, which tests for all 76 compounds on the panel.
Naltrexone is prescribed to help treat alcohol use disorder and, after detoxification, opioid use disorder, as tablets or a monthly injection.
Terms on this page: metabolite Β· cut-off Β· detection window Β· presumptive result Β· confirmation test. More questions: LabX answers.
Test for Naltrexone and 75 other compounds
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