Do doxylamine succinate causes false positive for opiates?

Doxylamine succinate, an antihistamine commonly used as a sleep aid, is not known to cause false positives for opiates in drug tests. However, some medications can lead to cross-reactivity in immunoassay tests, potentially resulting in inaccurate results. If a false positive is suspected, confirmatory testing, such as gas chromatography-mass spectrometry (GC-MS), can help clarify the results. Always consult with a healthcare professional for specific concerns regarding medications and drug testing.