My suspicious drug test

<$BlogItemNumber$>
Our whole company was asked to take drug tests recently because we set up some new contracts and needed them on file, I guess.

So I went. I peed in the cup. And that was it.

Here is an excerpt from a phone conversation I had with my boss a few days later:

Boss: Hi Rob, I have the drug test results back. Do you know what came back in yours?

Me: Did my test show unusually high levels of Awesome?

Boss: No - but it did show unusually high levels of water.

Me: I don't understand. Urine IS water.

Boss: Your sample was too diluted. You'll need to go take the test again.

They suggested that I avoid drinking water before my next test. I pointed out that without drinking any water I won't be able to pee. They had no answer.

Who do they think I am? A Miracle worker?