Drug Test - Will Ritalin Show Up?

So, I'm taking a drug test for a part-time job. I don't use illegal drugs, drink, etc. However, I am on medication for ADD (Ritalin.) If the drug test (it's a pee test - that's all I know) is checking for amphetamines, will Ritalin show up?

I chose not to disclose any disability on my job application. Should I get a note from my prescribing physician and give it to the lab technician when I go for the urine test? Or is that not a thing?

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