What is the PSC Certification? A PSC Certification is an accredited confirmation that you have certain qualifications and expertise to work as a Pharmaceutical Sales Rep. Essentially, it’s a hard-earned piece of paper that validates your competencies in core areas of the pharmaceutical, biotech and biopharma field. Employers, especially in this field — where lives are literally at stake — need to be confident in their Pharmaceutical Sale Rep team members, which is why most prefer, if not require, certification.