49 Pa. Code § 17.12d
The Special Purpose Examination, SPEX, is a 1-day examination focusing on a core of clinical knowledge and relevant, underlying basic science principles necessary to form a reasonable foundation for the safe and effective practice of medicine. The SPEX was developed by the NBME at the direction of the Federation to be a cognitive examination to assist the assessment of current competence requisite for medical practice by physicians who hold or have held a valid license in a United States jurisdiction. A passing score on SPEX is 75 as determined by the Federation. When the Board determines that an examination is required for a medical doctor coincident to a disciplinary or corrective measure, the requirement may be satisfied by passing the SPEX.
49 Pa. Code § 17.12d