Relentless Pursuit of Improved Patient Outcomes

The Castle story

Our story is simple. Our science is complex. From the beginning, Castle Biosciences was driven by a desire to help patients receive the best care possible. Our founder believed that the traditional methods to determine cancer patients' prognoses could be improved by harnessing the biology of their tumors. Through this belief, Castle was born.

Who we are

We are an innovator in proprietary laboratory-developed tests, which provide personalized, clinically actionable information that can help healthcare providers and patients make more informed disease management decisions.

Our mission

Improving health through innovative tests that guide patient care

Our vision

To transform disease management by keeping people first: patients, clinicians, employees and investors