College Applications, reporting SAT scores?

<p>I have taken the SAT once, but it was a lower score than I would like so I'm retaking it December.
The Test Scores section in the UC Application asks you to report your scores, but can it be left blank if you are planning to take the test again? Would it be possible to just check off that I have not received my scores yet? Could I just send in the new scores I want later or?</p>