I need to know how long lortab and soma stay in your system for a urine test done by a standard pain clinic. I have had perscriptions for these both a few months ago and didn't take them all and still have some and occasionally take one but I don't know how long a script is good for. I am returning to the doctor for help and want to know how long each drug stays in your urine. And how long a perscription is good for.