Chances are you have something called insulin resistance, as Type 1 diabetes usually has blood sugars lower than average... If you're overweight and eat a lot fo sugar, this could be the case. If so, then this isn't diabetes, but more of a pre-diabetes stage.

Either that, or you could have had a good amount of sugar before the test. There really is no "negatvie" or "positive" test for diabetes, but if it's in your urine, this could definately point to pre-diabetes or diabetes. Best of luck!