Specialized Pathology Laboratories (SPL) 17451 Bastanchury Rd. suite 204-30 Yorba Linda, CA 92886 Tel: 714-577-0413 Fax: 714-577-0002 Specialized Pathology Laboratories (SPL) is an independent and specialty-specific pathology laboratory. Our pathologists, all of who have received hands-on training via prestigious fellowships, are seasoned at diagnosing a vast array of diseases, and do so routinely on an almost daily basis. We pride ourselves on providing our patients