Yes. With the exact same testing reagents you'd use to test MDMA (Marquis, etc...). It should be pretty damn easy to determine if there's actual amphetamine in there or not. 🤷
There's no way to test for potency ofc, but assuming the stuff is legitimate the dosage should just be whatever the pill's suggests it is.
you have to be more specific? Dexadrine,adderal,ritalin,concerta....
go to a lifelabs or hospital and ask to have a urine test you will say I took said drug and i had a psychotic episode, after it subsided i came here i dont wanna mention the doctor by name because hes been very good to me have a urine test say you like to see the results whenever its conveinient or read the results