WestPac Labs is a network of three clinical and anatomic pathology laboratories with an unwavering commitment to our clients and the patients who we are privileged to serve. With laboratories in San Luis Obispo, CA, Bakersfield, CA, and Los Angeles, we have conveniently located Patient Service Centers and a vast network of couriers to meet our ...Central Coast‧California‧Bakersfield‧Locations‧Billing‧Contact Us.