Does Lidocaine Cause False Positive Results on Cocaine Urine Drug Screen?

CONCLUSION: The present study found no evidence that lidocaine or norlidocaine are capable of producing false positive results on standard cocaine urine immunoassays.
PMID: 31264143 [PubMed - as supplied by publisher]

Source: Journal of Medical Toxicology - June 30, 2019 Category: Toxicology Authors: Kim E, Murray BP, Salehi M, Moran TP, Carpenter JE, Koch DD, Ritchie JC, Schindler JM, Morgan BW Tags: J Med Toxicol Source Type: research