7 days ?
Acoording to: http://www.ipassedmydrugtest.com/drug_detection_times.asp Ritalin (Methylphenidate) is 1-2 days.
There are dates on the prescription paper and on the prescription container that will tell a person how long their prescription can be used. This varies from weeks to a year.
A paper prescription for Ritalin (methylphenidate) is typically valid for 90 days from the date it is written. However, regulations may vary by state or country, so it's essential to check local laws and guidelines. Additionally, a prescription can often be filled only once within this period unless specified otherwise by the prescriber. Always consult with a healthcare provider or pharmacist for the most accurate information.
Ritalin can be detected for 1-5 days in urine, but it is not part of the SAMHSA/ NIDA-5 standard drug test. Also Ritalin can cause false positives for methamphetamine/ amphetamines. If you have a prescription for it, notify them before the test. Or if test came up positive and you did not use meth, you should insist on additional GC/MS testing.
One year
2 months
As long as you take the prescription to your Probation officer then no they cannot lock you up for it. But if you do not tell them or take it to them and you test dirty they will arrest you until they can figure out why you tested dirty.
A Maryland drivers license is good for 5 years
90 days
Ritalin will typically stay in your urine for a month. Urine tests are sensitive enough to detect urine long after the last consumption.
1-2days
I don't think ritalin affects urine. I take ritalin for ADHD aand i'm pretty sure it has to relationship with pee.