The purpose of this study is to measure the performance characteristics for the collection, fixation and transportation of clinical nipple aspirate fluid (NAF) specimens of the ForeCYTE Breast Aspirator across 3 independent labs and the National Reference Laboratory for Breast Health (NRLBH). The study hypothesis is that each lab will have a specimen acceptability rate of at least 90%. If it is assumed that the true level of acceptability testing is approximately 96%, then the lower bound of a one-sided 95% confidence interval is expected to be at least 90%.