It happens. Sometimes it's a "false positive", sometimes it's something else totally innocuous that mimics a drug. I know that they told me not to have anything with poppy seeds before a urine test (think poppy seed on a bagel or a bun!) because it could lead to a positive for morphine, codeine or other opiates. Once I tested positive for opiates and I never "used" them except as administered when I was in the ER for alcohol--and that had happened 6-months prior. Some mouthwashes can lead to undue alcohol readings. If you're around people who smoke pot the smoke can actually settle on you enough to cause a positive. I would explore this with the people who gave you your test. They have probably run into it a lot. Or talk to a doctor, or google the info. And congratulations on the 668 days! You're doin' great!

Urine drug tests are not 100% accurate. You may want to look into mass spectrometry testing for confirmation that the urine test is hopefully inaccurate.

@kcongine I feel it's possible they may even have your file mixed up - those results might not be yours.. be firm and ask to speak to someone higher up because you know this is not your true result. You have put the work in to each and every one of those days of being clean- no admin error is going to take that away from you. You want to be retested. Immediately. Get mad about it. You have nothing to feel devastated about. Make them fix it. I believe in you- we all do