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A member asked:
Is it possible for concerta to be mistaken for cocaine in a blood test?
4 doctors weighed in across 2 answers
No: it could be mistaken for amphetamine, but certainly not cocaine. In addition, blood tests are not the first choice in looking for cocaine, because it is present only for a very short period of time, and at a very low concentration. Urine is the preferred fluid, though it can be detected in saliva/oral fluid as well. Concerta is a long-acting methyphenidate preparation and is chemically different.
Answered 7/4/2014
3.9k views
Blood test: nope. False positives for cocaine have been reported with Antibiotics, non-steroidal anti-inflammatory agents, & tonic water.
Answered 4/5/2015
3k views
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