Saint Louis University's Bachelor of Science in Medical Laboratory Science (MLS) degree prepares graduates to take a national certification exam to become a certified laboratory professional for a career as a health care professional in laboratory medicine. Medical laboratory science professionals save lives by performing and assuring the reliability of tests that provide objective information used in the early detection, diagnosis, monitoring and effective treatment of disease.
Up to 80% of all clinical decisions are impacted by clinical laboratory testing. The knowledge and skills required of medical laboratory professionals are diverse, involving both scientific detective work and managerial competence. Each day offers a challenge, and the opportunities to learn are endless.
Additional program highlights include:
- SLU's MLS program was one of the first in the country; it has over 85 years of continuous accreditation.
- SLU's MLS program has guaranteed placement in clinical practicum training sites.
- SLU's MLS program boasts both a low student-faculty ratio and state-of-the-art medical laboratory science labs – both of which help to substantially enhance the experience of students.
- SLU's MLS graduates' exam pass rates are consistently at or near 100%, as is the graduate career placement rate.
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Students in SLU's medical laboratory science program have numerous opportunities for personal and professional growth through faculty, professional and peer interactions. They have the opportunity to join professional organizations such as the American Society for Clinical Laboratory Science (ASCLS) and the American Society of Clinical Pathology (ASCP).

