Drug Testing for VA Employment

Hi everyone! I was just wondering if anyone had any experience with the physical and drug testing that the VA does for employment. I am concerned that I may be eliminated from eligibility for a position I was recently selected for if I tell them I suffer from anxiety and depression of which I take an antidepressant for. I do not take any benzos for the anxiety at all so I am not concerned about testing positive for any controlled substances. Does anyone have any knowledge on this matter?
It will be fine as long as you provide proof of prescriptions, and I don't think they are looking for antidepressants to begin with. Congratulations on your job offer!