That's good to know. I've only done a little initial research around this. I ordered some test strips from a manufacture called MD-Bio (https://mdbio.com). I'll be sure to review all their instructions and safety info.
Out of curiosity, are you saying that a Fentanyl level can be so low that it's undetectable by the test strips, but still high enough to kill someone?
Out of curiosity, are you saying that a Fentanyl level can be so low that it's undetectable by the test strips, but still high enough to kill someone?