Medical tests are always going to be messy, because biology is messy. It's ultimately up to the physician to order tests and interpret the results. Here's a list of tests for diagnosing breast cancer, none of which approach the numbers you are hoping for (a needle biopsy is only performed once a mass is found)
http://www.getthediagnosis.org/diagnosis/Breast_Cancer.htm
I just stumbled across this site, but you can browse by diagnosis for more numbers.
http://www.getthediagnosis.org/browse.php?mode=dx