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OPI vs MOP/MOR
PostedAugust 27, 2025
UpdatedAugust 27, 2025
You may have some question about OPI, MOP/MOR testing here is a brief summary on what the difference is. If you click here you can find a statement from James Ramsy, President of Labb, going into more detail on the differences of drugs and how it is tested.
Opiate is not a drug but is the title name for the drug class. In the opiate drug class the following drug fall under that category:
- Morphine Codeine
- Oxycodone/ Oxymophone
- 6AM/ 6 MAM (Heiron)
- Hydrocodone/ Hydromorphone
- Fetynal
- Tremadol
- Methadone
- Buprenophine
OPI, MOP, and MOR all refer to the same test.
Despite the different names, OPI, MOP, and MOR are identical assays. They are all designed to detect only Morphine and Codeine. These assays do NOT detect other opiates.
Drugs like Oxycodone, Heroin, Fentanyl, Tramadol, and others require separate specific tests. They are part of the opiate class but are not detected by OPI/MOP/MOR assays.
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