Becoming a med tech, formally known as a medical laboratory scientist (MLS) or medical laboratory technician (MLT), requires either an associate or bachelor’s degree in laboratory science followed by a national certification exam. The path you choose depends on how quickly you want to start working and how far you want to advance. The median annual salary for clinical laboratory professionals was $61,890 in May 2024.
MLT vs. MLS: Two Entry Points
The term “med tech” covers two distinct roles with different education levels. A Medical Laboratory Technician (MLT) holds an associate degree and handles routine clinical laboratory tests using automated equipment and standardized procedures. MLTs prepare specimens, run tests, and document results. The role emphasizes precision and consistency, and MLTs typically work under the supervision of more senior lab professionals.
A Medical Laboratory Scientist (MLS), sometimes still called a medical technologist (MT), holds a bachelor’s degree and performs more complex diagnostic testing. MLS professionals validate results, investigate irregular findings, troubleshoot equipment, and determine when additional testing is needed. They operate with more autonomy, and as they gain experience, they often take on leadership responsibilities like supervising MLTs, mentoring students, and ensuring compliance with regulatory standards.
If you want to work in a lab as quickly as possible, the associate degree MLT route gets you there in about two years. If you want higher pay, more independence, and a broader career ceiling from the start, the four-year MLS bachelor’s degree is the stronger investment.
What You’ll Study
Both MLT and MLS programs require a heavy foundation in biology and chemistry. For MLS certification eligibility, you need at least 16 semester hours in biology (including microbiology) and 16 semester hours in chemistry (including organic chemistry or biochemistry). General education coursework in math, English, humanities, and social sciences rounds out the degree.
The science courses aren’t just prerequisites you check off and forget. They directly prepare you for the clinical work ahead. Understanding how cells behave, how chemical reactions produce measurable results, and how microorganisms grow and respond to treatment is the core of what you’ll do every day in a lab.
Clinical Rotations
During the final year of a bachelor’s MLS program, you complete a clinical rotation at a hospital or reference laboratory. At Mayo Clinic’s program in Florida, for example, this rotation lasts six months with eight-hour days, four days a week. You rotate through the major departments that make up a working clinical lab:
- Chemistry: analyzing blood and body fluids for chemical markers
- Hematology and coagulation: studying blood cells and clotting mechanisms
- Microbiology: culturing and identifying bacteria, viruses, fungi, and parasites that cause infections
- Immunohematology (blood banking): typing blood and preparing it for transfusion
- Serology and immunology: detecting antibodies and antigens produced by the immune system
Some programs also offer enrichment rotations in specialized areas like molecular pathology. These clinical hours are where textbook knowledge becomes hands-on skill. You’ll learn to operate the instruments, recognize when something looks wrong with a result, and work within the pace and pressure of a real diagnostic lab.
Passing the Certification Exam
After completing your degree and clinical training, you need to pass a national certification exam. The most widely recognized credential comes from the American Society for Clinical Pathology Board of Certification (ASCP BOC). The most straightforward route to sit for the MLS exam is completing a bachelor’s degree plus a NAACLS-accredited MLS program within the last five years.
There are alternative routes as well. If you already hold MLT certification and later earn a bachelor’s degree with the required biology and chemistry coursework, you can qualify for the MLS exam after two years of full-time clinical experience across the major lab disciplines: blood banking, chemistry, hematology, microbiology, immunology, and urinalysis.
The exam itself covers all the laboratory departments you trained in. It tests both factual knowledge and your ability to interpret results, troubleshoot problems, and apply quality control principles.
State Licensing Requirements
National certification is essential, but some states add their own licensing requirements on top of it. California, Florida, Hawaii, Louisiana, Montana, Nevada, North Dakota, New York, Tennessee, and West Virginia all require separate state licensure for laboratory professionals. Puerto Rico does as well. Each state sets its own rules, so if you plan to work in one of these locations, check that state’s licensing board early in your education to avoid surprises.
In states without individual licensure requirements, your ASCP certification is generally sufficient to work, though most employers still expect or require it regardless.
Advancing From MLT to MLS
If you started with an associate degree as an MLT and want to move up, bridge programs let you earn a bachelor’s degree while continuing to work. The University of Arkansas for Medical Sciences, for instance, offers an online MLT-to-MLS program with three, four, or five-semester tracks depending on how many prerequisites you’ve already completed. You need a minimum 2.0 GPA, completion of a NAACLS-accredited MLT program, and active employment as an MLT while enrolled.
These bridge programs require about 75 prerequisite credits, split between general education (27 credits) and program-specific science coursework (48 credits). A grade of C or better is required in each prerequisite. The online format makes it practical for working technicians, though the workload of balancing a lab job with upper-level coursework is significant.
Specialization Options
Once you’re certified as an MLS, you can pursue categorical certifications to specialize in a specific discipline. ASCP offers specialist credentials in blood banking, chemistry, hematology, and microbiology. Some MLS programs include structured categorical tracks that prepare you for these exams alongside your generalist training.
Specializing can open doors to higher-paying roles, positions at reference laboratories or academic medical centers, and eventually leadership or education roles. It’s not required early in your career, but it becomes a useful differentiator as you gain experience and want to advance.
Job Market and Salary
Employment for clinical laboratory professionals is projected to grow 2 percent from 2024 to 2034, which is slower than average for all occupations. That modest growth rate can be misleading, though. The field has persistent staffing shortages driven by retirements and high turnover, so job openings remain steady even without rapid expansion. Hospitals, reference labs, clinics, and public health agencies all hire med techs, and positions are available in virtually every region of the country.
The median annual wage of $61,890 reflects both MLT and MLS roles combined. MLS professionals with bachelor’s degrees and certifications typically earn more than MLTs, and specialists or those in supervisory positions earn above the median. Geographic location, shift differentials for evening or overnight work, and the type of facility also influence pay.