### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
I am a male 34 years and currently going to a pain management doctor for severe pain in my back. I have had two surgeries on my back. Recently they give me a urine test and they said the results came back saying that there was no pain killer medication in my system. I take the medicine every day as prescribed by my doctor and the results should have showed it. Can you tell me if the is any medical reason why my results would come back like that? I drink Mountain Dew and I pee alot, my mom says that maybe that has something to do with it. Please help me because the doctor took me off of the medication because he said it s a state law that he has to do that if it doesn t show up in my urine test. I need the medicine to help get rid of my pain.

### output:

See Mr, what for you got done two surgeries?I hope you went for lower back pain Elysee it is quite difficult to detect painkillers in urine since they undergo metabolism(catabolism=break down into short chain prouducts&appear in urine), NOT ALL SOME MEDICATION EXCRETED IN URINE UNCHANGED. BUT problem here is why do you want to know in urine, at last see, IN HUMAN BODY NATURAL PAIN KILLERS LIKE ENDORPHINS WILL Produce IN RESPONSE TO PAIN, THEIR LEVEL MIGHT HAVE COME DOWN DUE TO CONSTANT worried about back pain, which eventually increases pain&visa versa. Go for YOGAASANAS CONTROL YOUR MIND FIRST OTHERWISE IT ACTS LIKE ENEMY&EXPAND YOUR MIND&ENLARGE YOUR WORLD, THEN ONLY MEDICINES GIVEN OR SURGERY CONDUCTED WILL HELP.GOOD LUCK.