Will pills show up on a mouth swab?

Yes, pills can show up on a mouth swab test, particularly if they contain substances that the test is designed to detect, such as opioids, benzodiazepines, or stimulants. The detection window varies depending on the specific drug and the individual's metabolism, but substances may be present in saliva shortly after use. It's important to note that different mouth swab tests may have varying sensitivity and specificity for different drugs.