Subjects will be asked to allow us to collect an extra 2 tablespoons of blood at the time of pre-operative blood work. For those subjects with cancer who undergo surgery, a follow-up blood sample will be collected prior to chemotherapy, radiation, or hormonal therapy, and every six months afterwards at the time of their standard clinic/office visit for two years, then once a year for year 3-5. This will allow researchers to examine the samples to determine if blood changes over time after surgery, and what type of result may indicate a risk for recurrence.