 [ Symptoms ] i was in a accident and now in pain mgmt i get oxy 10s & was tested positive for morphine never used howwhy in urine my motorcycle accident killed my friend and i was in hospital for 8 months i had 2 urine tests and it shows positive for morphine how can this be in my system if i am not & never had used morphineheroin i am prescribed oxy 10 is and take clonazepam adderall keppra melozicam how is this showing on my urine test this will ruin my life if positive & will not be allowed to continue pain management please someone help me & answer thx   jenna [ Disease ] the only way you can test positive for marijuana is to be smoking or ingesting weed unless the urine test was somehow flawed or mixed up not likely otc cold meds will not cause a positive thc result get another test but no one is going to buy your story that you have not be indulging in cannabis if you test positive again you can get a blood or hair test as well as urine