Castle Biosciences is a leading diagnostic company focused on transforming disease management by keeping people first…

The patients who benefit from the information that our advanced diagnostic tests provide

The clinicians who use our tests to guide disease management decisions

Our talented and valued employees

Our investors

For the diseases that our portfolio of tests cover, we believe the traditional approach to developing a treatment plan for cancers and other diseases using clinical and pathology factors alone is inadequate and can be improved by incorporating the personalized information our tests provide.

Our innovative tests for skin cancers, uveal melanoma, Barrett’s esophagus and mental health conditions provide personalized, clinically actionable information to clinicians and patients to guide treatment decisions and improve health outcomes.

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