I have been taking loritab and xanax for quite a long time. My family doctor tested me three months ago and they did not show up in my system. He re-tested me the following month via blood and urine. I suppose they showed up then because he continued to prescribe them for me. Last month my family doctor did another screening on me both blood and urine and again states I do not have them in my system. How is this possible? I take two to three loritabs daily. What is the name(s) of the test(s) that would show this information? I am very concerned because my doctor told me I had to get another doctor because my medicine does not show on the "intelligent, accurate reports" and "you have been tested two times". Something does not make any sense here.

Are you sure you take as much as you think you do?

1. you are not taking them properly
2. the drug store where you are getting them are sub some non drug or the wrong drug
3. his testing is wrong