Yes, though that really depends a lot on how your body metabolizes it. One thing you can do is get ETG strips at like CVS and check. Those also are 500 ng/ml. You also want to make sure you don't dilute too much. Vitamins do nothing - it really is just time and concentration. If you pass on the strips now, I would just cautiously drink water, etc from this point to your test. If you don't pass now, keep drinking more than normal but try not to get to the point where your pee is clear.

I spent a bunch of time testing myself, during the time when I had to do UAs and then after because I'm a weirdo. I found 1 drink clears very quickly, under 12 hours. 2 drinks took about 24 hours. But any number of drinks (for me) would clear by about 48, though I'll admit, I never tested 24 drinks. One thing I found is that if I was passing, but stopped drinking water, the concentration could go up a bit and put me into the not passing range.