In a study evaluating the performance of urine drug screening (UDS) in trauma patients using LC-MS confirmatory testing, what were the most common false negative results?
The most common substances identified with LC-MS that screening negative on UDS were gabapentin, opioids (fentanyl, buprenorphine, hydrocodone, oxycodone, tramadol), antihistamines and bupropion/ phenethylamines.
Stephanie T. Weiss, Laura J. Veach, William McGill & Jeffrey Brent (2022) Rates and types of urine drug screen false negative results compared with confirmatory toxicology testing in major trauma patients, Clinical Toxicology, 60:10, 122-1129, DOI:10.1080/15563650.2022.2117052
Contributed by: VCU Medical Toxicology Fellowship
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