Will you fail a probation drug test if you have a script for hydrocodone and took a oxycodone?

Possibly. Lortab contains the same ingredients as Vicodin: hydrocodone and acetaminophen.

Hydrocodone is an opiate medication, but since it is synthetic - breaks down into different ingredients, and it is the leftovers they are looking for on the test. So, if the test would normally pick up metabolites of Vicodin, then yes. If not, you're okay.

It is important, if you have a prescription for Lortab, that you disclose it at the time of your test. That way they will know why there are opiates in your system. They can't fault you for having a valid prescription.

If you don't have a valid prescription, then wait for 4 days and it will be out of your system.