Washington University Pathology Services is a leader in ancillary testing and we focus on bringing personalized medicine through the delivery of precise diagnostic results. Our faculty members have a range of subspecialty expertise and our accurate diagnoses provide physicians and patients with the tools to find the best treatment options available.

Find out about our latest advancements in testing initatives below.


GatewaySeq is a tumor-only, high coverage targeted next generation sequencing assay for the identification of gene mutations, copy number alterations, microsatellite instability, tumor mutational burden, and gene fusions. Find out more about this test here.