MLS certification and licensure

Why it matters

The platform can teach you how a clinical laboratory works. It cannot make you a medical laboratory scientist. In the US, MLS work requires an accredited education with clinical rotations, a national certification exam, and in some states a state licence. Planning that route early saves years: picking the wrong degree or an unaccredited program can mean repeating coursework.

Requirements drift. Exam eligibility routes, fees and state rules change. The links below go to the official bodies; always confirm details there. Checked on 2026-10-23.

The roles

• Medical laboratory scientist (MLS), also called medical technologist (MT) or clinical laboratory scientist (CLS): usually a bachelor's degree and a NAACLS-accredited MLS program. Performs and supervises high-complexity testing across departments.
• Medical laboratory technician (MLT): usually an associate degree from an accredited MLT program. Performs many tests, often with more limited responsibility for complex testing. Many MLTs later complete an MLT-to-MLS bridge program.
• Specialist certifications exist in areas such as blood banking, microbiology, chemistry and molecular biology, usually after experience.

Education: NAACLS accreditation

The National Accrediting Agency for Clinical Laboratory Sciences (NAACLS) accredits MLS and MLT programs. Accredited programs combine coursework in chemistry, hematology, microbiology, immunohematology, immunology and molecular methods with a supervised clinical practicum in a working hospital lab. Some programs are a full four-year degree; others are a one-year post-baccalaureate certificate for people who already hold a science bachelor's degree with the right prerequisites. NAACLS keeps a program search on its site.

Certification: ASCP Board of Certification

The ASCP Board of Certification (ASCP BOC) offers the MLS(ASCP) and MLT(ASCP) credentials. Candidates qualify through an eligibility route: the most common is completing a NAACLS-accredited program, while other routes combine a degree with documented clinical experience. The exam is computer-adaptive and covers the laboratory departments in this course. Certification must be maintained through ASCP's Credential Maintenance Program with continuing education. Check the BOC site for the current routes, content outline and maintenance cycle rather than relying on a summary.

Other certifying bodies exist (for example AMT), but many employers and most state licensing boards recognize ASCP.

State licensure

Most states do not license laboratory personnel separately, but a number do, including California, New York and Florida. In those states you need a state licence (which usually requires certification or a state exam plus specific education) before you can work. Rules differ by state and by job level, so look up the state's health department or licensing board directly.

Federal CLIA regulations also set minimum personnel qualifications for testing at each complexity level (CMS CLIA).

Worked example: planning a route

A fictional learner, Dana, has a biology bachelor's degree and lives in Florida.

1. Dana compares her transcript with the prerequisites of nearby post-baccalaureate MLS programs listed on NAACLS (typically chemistry including organic or biochemistry, biology including microbiology, and math or statistics). She is missing one course and plans to take it next term.
2. She applies to a 12-month accredited program that includes clinical rotations.
3. After completing it, she qualifies for the MLS(ASCP) exam through the accredited-program route.
4. Because Florida licenses lab personnel, she checks the state board's requirements and applies for her licence once certified.
5. She sets a reminder for credential maintenance and continuing education.

How this course fits

The courses on this platform map to the knowledge on the exam (specimens, departments, QC, lab math) and help you prepare for program coursework and interviews. They are not a substitute for an accredited program, clinical rotations, the certification exam or a licence.

Common mistakes

• Enrolling in a program without checking NAACLS accreditation.
• Assuming certification alone allows work in a licensure state.
• Relying on old forum posts for eligibility routes or fees.
• Forgetting continuing-education requirements after certification.

Quick recap

• MLS: bachelor's plus a NAACLS-accredited program with clinical rotations; MLT: associate degree route.
• Certification: ASCP BOC (MLS or MLT) through an eligibility route; maintain it with continuing education.
• Some states, such as California, New York and Florida, also require a state licence.
• Always confirm details with the official bodies.

Try it

Open the Do tab and write your own route plan.