Are there opioids that are not detected by lab drug screens? Besides U-47700... fuck that shit. Things like furanyl-fentanyl, acryl-fentanyl, etc. I'm going to be tested fairly soon, likely once a week or so. And the urine gets sent to a lab. I know for a fact that U-47700 is not detected at all, but there are so many complications included when using that poisonous shit. I have a high tolerance and want to obtain something undetectable before I go into withdrawals from having to quit heroin for the tests.
KRATOM