How long does Concerta stay in your system?

The amount of time Concerta stays in your system depends on the form of the drug taken, but can be up to 90 days for a hair-based drug test, notes PassYourDrugTest.com. Concerta is found in some forms of tobacco, as well as some prescription medications. The half-life of Concerta in the form of methylphenidate is approximately 3.6 hours, according to RxList.

For urine tests and saliva tests, Concerta can be detected for 1 to 2 days in the prescription form or 1 to 3 days in the tobacco form, according to PassYourDrugTest.com. The time it is detectable in a blood test is unknown.