"The chances of you getting a false positive depends on the quality of the laboratory that does the testing. There seems to be about 1,200 of these labs in the United States currently testing for drugs
. Less than a 100 of these meet federal standards and most of the individual states do not regulate drug
test labs. The number of false positives returned range from 4% to over 50%, depending on the lab.
A concern here is that, if your company tests for drug useage, they are probably not required to use a certified drug testing lab, which means you have a greater chance of getting a false positive."
I would link my source but the last time I tried that it deleted my paragraph I had typed out. But anyways, SWIM
read that ketamine
could cause false positives from 1-3 days after it has been taken (depending on the amount taken/body weight). If SWIY has an upcoming drug test in a few days I would recommend waiting.