what would make a saliva drug test read positive for hydrocodone which i do not take. my meds are oxycontin 80mg. oxycodone hcl 30mg.,armour thyroid,clonazepam .5mg.1x, addderal 10mg1x, androgel,brinzolamide-brimonidine eye drops, dhea 50mg1x, magnesium hydroxide,ipratropium-albuterol andmultiple vitamins.I am being dropped by my pain management Dr. because of this! It is driven me crazy for i have not taken anything other than what i've been prescribed. Can you think of any possible reason that this result happened. I have been going to p.m. drs. for over 15years and never failed a drug test. Thank you Doctor...Harold Francis