Medical Laboratory Scientists (MLS), also known as Clinical Laboratory Scientists, are essential healthcare team members. They perform complex laboratory testing that aids in diagnosing diseases, monitoring treatment, and promoting overall patient health. From hematology to microbiology and blood banking, MLS professionals work behind the scenes but significantly impact patient care.

If you’re interested in this highly respected, science-based career, this piece will cover how to get started and practical advice to help you succeed beyond the basics.

Meet the Educational Requirements

To become a Medical Laboratory Scientist, you must first:

• Earn a high school diploma or equivalent.
• Complete a bachelor’s degree in Medical Laboratory Science, Clinical Laboratory Science, Medical Technology, or a related science field (such as biology or chemistry).
• Enroll in and complete a clinical rotation through an accredited MLS program.

A bachelor’s degree program typically includes classroom instruction and hands-on clinical training. Choosing a NAACLS–accredited program is critical. It ensures your education meets the standards required for national certification eligibility. The coursework will cover:

• Hematology (study of blood and blood disorders)
• Clinical Chemistry (analyzing blood and body fluids)
• Urinalysis and Body Fluids
• Microbiology (identification of infectious organisms)
• Immunohematology (blood banking and transfusion medicine)
• Immunology and Molecular Diagnostics
• Lab Management and Quality Assurance

Participate in a Clinical Practicum

In your final year of study, you’ll complete clinical rotations in lab environments, typically hospitals or reference labs. This supervised experience is where you’ll apply classroom knowledge and begin developing your technical and analytical skills. It is important to take initiative during clinicals. Ask to observe uncommon tests or troubleshoot instruments. The more exposure you get in the field early on, the more confident you’ll be as a new graduate.

Get Certified

After graduation, certification is the next essential step in the journey to become an MLS. Certification demonstrates your competency to employers and may be required by state licensure boards. The most recognized certifying bodies include:

• ASCP (American Society for Clinical Pathology) – MLS(ASCP)
• AMT (American Medical Technologists) – MT(AMT)
• AAB (American Association of Bioanalysts)

Each organization offers a national exam that assesses your knowledge across all core lab disciplines. Most new graduates take the ASCP Board of Certification (BOC) exam. It is crucial not to delay studying for and taking an exam. Schedule it within a few months of graduation while the information remains fresh. Use official study guides, practice questions, and mock exams from your program or professional organizations.

Build a Strong Foundation for the Field

Success as an MLS begins during your education. It is essential to use the following strategies when learning information for the field. Focus on understanding, not memorizing. Learn the “why” behind procedures. This builds stronger troubleshooting skills. Use repetition, mnemonics, and visual aids. Try to form a study group to reinforce concepts and talk through difficult material. Create condensed “cheat sheets” or flashcards to summarize key reference ranges, normal values, and disease associations.

Many successful MLS students recommend keeping a small reference binder for quick reviews of staining techniques, equations (like anion gap or absolute neutrophil count), and lab values.

Tips You Won’t Find in Most Guides

• Get familiar with laboratory information systems (LIS) during clinicals. Knowing how to navigate and troubleshoot these systems makes you ready for most jobs.
• Volunteer for complex or unfamiliar tasks like body fluid differentials or antibody panels. These experiences set you apart.
• Document your learning. Keep a log of test principles, quality control tips, and troubleshooting notes. This will serve as a lifelong resource.
• Network with your clinical preceptors. Many students land their first job where they are trained. Show professionalism, a positive attitude, initiative, and curiosity.
• Understand regulations. Learn about CLIA, CAP, and The Joint Commission. Regulatory awareness is critical to understanding the larger picture of laboratory administration.

Becoming a Medical Laboratory Scientist is a rewarding journey that combines science, problem-solving, and patient impact. With a solid academic foundation, clinical experience, national certification, and a few extra strategies, you will be well-equipped for a successful and meaningful career.

Sources:

American Medical Technologists. (n.d.). How to become a medical laboratory scientist. Retrieved from https://americanmedtech.org/blog/blog-post/how-to-become-a-medical-laboratory-scientist

American Society for Clinical Laboratory Science. (n.d.). How do I become a laboratory professional? Retrieved from https://ascls.org/how-do-i-become-a-laboratory-professional/#1617055895280-c8f09955-5925

American Society for Clinical Pathology. (n.d.). Get credentialed. Retrieved from https://www.ascp.org/content/board-of-certification/get-credentialed

Bureau of Labor Statistics. (2024). Clinical laboratory technologists and technicians. U.S. Department of Labor. Retrieved from https://www.bls.gov/ooh/healthcare/clinical-laboratory-technologists-and-technicians.htm

University of Cincinnati Online. (2023, July 12). How to become a medical laboratory scientist. Retrieved from https://online.uc.edu/blog/become-medical-laboratory-scientist/