Phlebotomist

Hello everyone. I wasn't sure where to ask this question, so I hope I am in the right place. I recently became a Certified Phlebotomist and I am now job hunting. I am also a chronic pain patient, and I take 10mg of Oxycontin tid and 7.5/325 oxycodone PRN for breakthrough pain. Beofre I entered the medical field, I had many jobs that required drug testing prior to being hired, and I always brought my medication bottles with me, and I was always considered to pass the drug test. My question relates to drug testing when working in the medical field. When I go for my pre-employment drug test, and bring my prescription bottles as usual, will my employer still consider the test to be negative? As I have read from your previous discussions here, some states/employers believe that any nurse who is taking pain medication is impaired. I am just wondering if anyone here knows whether the same applies for other people in the medical field - specifically phlebotomists. I did my enitre schooling and clinical internship while taking my pain medications. None of my instructors knew of my medical problems or my medications, and I received outstanding evaluations and outstanding letters of recommendation. Anyway, I am just looking for advice, opinions, and information regarding narcotic medication usage while working in a medical setting. If it makes any difference, I have not applied to work in any hospitals because that type of work would be to body intensive for me. All the phlebotomy jobs I have applied for are in outpatient labs or are in a doctors office. Thanks in advance for any assistance you can offer.