 [ Symptoms ] will i fail my hair drug test because of my perscription medication  i took lortab for over a year i do not abuse my perscriptions but a few months ago the dr put me on percocet recently i went back to dr and got norco sometimes i take more than my perscribed dosage will they detect that in my hair drug test and fail me [ Disease ] while opiates may show up on drug screening test if you are prescribed them for a medical problem disclose this up front this should not be considered a failed test if you taking these drugs recreationally without a valid medical prescription this would considered a failed test