Hi My Last 2 Doctors Visit Showed High Potassium,and My

hi my last 2 doctors visit showed high potassium,and my urine sample crossed over to show meth.my doctor knows I don't use it.i am diebetic,i take the following meds,amyral,metformin,januvia,norvasc.norco,zantac,diazapam,and levocetrizine and asprin my doctor is just as confused as I am on how it shows I took something like over the counter sudifed or something else.so that were going to send a sample of urine to somewhere else to try to find the cause wil l high potassium show I took something when I didn't or is my doc's office test wrong I been taking the meds I put in here for at least 3 years this is the frist time it show up like this .do you have any idea how ?