My Dr. office messed up and sent my meds to me to late, I take 15mg roxicodne, I have been on my meds for over 3years and unfortunately I have become dependent on them, because my medication were sent late I was out of my meds for 3 days, withdrawals are not something I can go through, it could actually kill me due to a massive heart condition, so being off my meds and going through withdrawal was out of the question. A friend of mine also on pain meds let me borrow some of hers, however, she takes 30 mg roxicodone, when I went into the Dr. for my appointment they did a drug test to make sire I was on my meds and not selling them or taking meds not prescribed to me. The only thing I have done is take the same med in a different mg, can they tell the difference?