Vitamin B man. Its crucial. Why didnt you use it? Makes your piss yellow.

I'm not at expert but since no one's answered... generally if these things pass a basic strip test and eye-inspection for color, you're good. If they suspect it's been messed with and do further integrity testing and find that its a dilute result, they may ask you to test again.

In the latter case, get some quickfix so you can stop worrying about it