Does dxm give you a false positive for opiates?

Dextromethorphan (DXM) is not an opiate, but it can sometimes lead to false positives for opiates on drug tests. This is primarily due to the way some tests are designed and their potential cross-reactivity with certain substances. However, confirmatory tests, such as gas chromatography-mass spectrometry (GC-MS), can distinguish between DXM and actual opiates. It's important to consider the specific testing methods used when interpreting results.