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A member asked:

Docs, could a lab tell the difference between concerta and focalin (dexmethylphenidate) xr in a urine sample?

A doctor has provided 1 answer
Dr. Edward Kuhnley answered

Specializes in Child Psychiatry

No: To detect d,l-methylphenidate (Concerta) or d-methylphenidate (Focalin) a quantitative LC-MS/MS test and critical-frozen specimen are required. Urine should be collected within 8 hours of dosing, and blood (serum/plasma) within 4 hours of dosing. These tests do not distinguish between d- and l- isomers of methylphenidate.

Answered 6/5/2014

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Do focalin (dexmethylphenidate) and cocaine trigger the same positive urine drug test?

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A member asked:

My doc switched me from Adderall IR 20mg 2x a day to 40mg Focalin (dexmethylphenidate) XR bc he suspected addy wasn't working. Focalin (dexmethylphenidate) gives me euphoria, ady didn't, bad?

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A member asked:

Sense quitting antidepressant Ive had no energy,tired all day-so doc prescribed me focalin (dexmethylphenidate) 10mg 1x a day- will it help w energy?safe 2take long term??

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A member asked:

Been on focalin (dexmethylphenidate) 10mg, once a day, for 2 days now( yesterday & today)... Can't tell any difference? When will I be able to tell a difference?

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A member asked:

Been on Wellbutrin (bupropion) a month but not seeing results so doc prescribed me focalin-I'm ready 2start taking it but am still weening off Wellbutrin (bupropion),tht ok?

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Will a lab be able to tell the difference between concerta and focalin (dexmethylphenidate) XR in a urine sample?
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