Saliva Swab Test, Acid Reflux?

hey guys...
well i got this swab test for this job coming up, its been about 4 days since i got high, and the swab test will most likely be sometime later on in the week. Ive read that 4 days is the max detection time BUT my only worry is I suffer from acid reflux so i tend to cough up alot of crap, mostly white spit, (sometimes resin but not lately), Would this somehow cause the swab to read positive? I have a friend who works with this company and he told me he got high the night before and passed. But i dont think he smokes as much as i do, Ive been smoking everyday for the past year or so, and nothing but realllly dank chronic. Am i just being paranoid? ty for any replys :jointsmile:

Should be fine. Just take a tooth brush and some mouth wash with you and brush and rinse good before you do in.