Updated April 15, 2026
Medical Laboratory Scientist
Also known as: Biochemistry Technologist, Blood Bank Laboratory Technologist, Blood Bank Medical Technologist
Medical laboratory scientists analyze blood, tissue, and body fluids to diagnose diseases and guide treatment decisions. You'll run complex tests, troubleshoot equipment malfunctions, and ensure accurate results that doctors depend on for patient care.
Getting Started
How to Become a Medical Laboratory Scientist
You can start working as a medical laboratory scientist in 4.3 years with $70k-$123k in training — that's typical for bachelor's-level health care careers but leads to higher starting pay than most.
Bachelor's Degree in Medical Laboratory Science
4 years · $60,000-$90,000
MLS(ASCP) Certification Exam
1-3 months · $235
State Licensure (if required)
1 month · $100-$300
Entry-Level Medical Laboratory Scientist
2-3 years
Specialty Certification (Optional)
6-12 months · $200-$400
Senior Medical Laboratory Scientist
Ongoing
Start
Year 4
Year 4
Year 8
Bachelor's Degree in Medical Laboratory Science
4 years
MLS(ASCP) Certification Exam
1-3 months
Entry-Level Medical Laboratory Scientist
2-3 years
Senior Medical Laboratory Scientist
Ongoing
| Step | Duration | Cost | Details |
|---|---|---|---|
Bachelor's Degree in Medical Laboratory Science | 4 years | $60,000-$90,000 | Complete a 4-year Bachelor's degree in Medical Laboratory Science from a NAACLS-accredited program. The curriculum includes academic coursework in chemistry, biology, and laboratory techniques, along with integrated clinical practice rotations. |
MLS(ASCP) Certification Exam | 1-3 months | $235 | Prepare for and pass the MLS(ASCP) certification exam administered by the American Society for Clinical Pathology Board of Certification. This credential is required by many employers and for state licensure in certain states. |
State Licensure (if required) | 1 month | $100-$300 | Apply for state licensure if practicing in states such as California, Florida, or New York that require licensure for Medical Laboratory Scientists. Licensure typically requires passing the MLS(ASCP) certification exam. |
Entry-Level Medical Laboratory Scientist | 2-3 years | — | Begin working as a Medical Laboratory Scientist performing complex laboratory tests, analyzing results, and ensuring quality control. Gain experience across various laboratory departments including hematology, microbiology, chemistry, and immunology.Starting salary: $60,780/yr |
Senior Medical Laboratory Scientist | Ongoing | — | Advance to senior-level positions with increased responsibilities including supervising junior staff, managing laboratory sections, implementing new testing procedures, and serving as a technical specialist in complex diagnostic testing.Starting salary: $70,000-$80,000/yr |
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Overview
What Does a Medical Laboratory Scientist Do?
Medical laboratory scientists work primarily in hospital labs, commercial labs, and clinics, splitting time between hands-on testing and quality control oversight. You'll perform complex analyses that require scientific judgment, not just routine procedures.
- Analyze samples of biological material to determine their chemical content or reactions.
- Review laboratory findings to verify the accuracy of test results.
- Perform chemical analysis of body fluids, including blood, urine, or spinal fluid, to detect normal or abnormal components.
- Enter data from medical tests and clinical results into computer systems for storage and tracking.
- Collect and examine blood samples using a microscope to count cells, identify their shapes and structures, or determine blood type and compatibility for transfusions.
- Set up, clean, and maintain laboratory equipment.
- Operate, calibrate, and maintain equipment used to measure and analyze substances, such as spectrophotometers (which measure light absorption), calorimeters (which measure heat), flame photometers (which detect specific elements), and computer-controlled analyzers.
- Establish and monitor quality assurance programs to ensure laboratory results are accurate and reliable.
Tasks from O*NET OnLine
Requirements
Licensing & Certification
You need MLS(ASCP) or MT(AMT) certification to work — this isn't optional. About 12 states also require separate state licenses with additional exams, particularly New York and California with their own strict requirements.
| Credential | Status | Cost | Renewal |
|---|---|---|---|
| MLS(ASCP) | Required | $240 | Every 3 yr |
| MT(AMT) | Also accepted | $120-$250 | Every 3 yr |
| State Laboratory License | required_in_some_states | $100-$300 | 12-24 months |
MLS(ASCP) (American Society for Clinical Pathology (ASCP) Board of Certification) — Gold-standard credential proving competency to perform complex laboratory testing independently
- Exam: MLS(ASCP) Exam: 100 multiple-choice questions, 2 hours 30 minutes. Covers chemistry, hematology, immunology, immunohematology/blood banking, microbiology, urinalysis/body fluids, and laboratory operations. Computer-based testing at Pearson VUE centers.
- Cost: $240 (application/exam fee). Recertification fee: $80 per 3-year cycle.
- Renewal: 36 continuing education (CE) points per 3-year cycle through the ASCP Credential Maintenance Program (CMP). Points earned via ASCP-approved CE activities, publications, presentations, or college coursework.
MT(AMT) (American Medical Technologists (AMT)) — Alternative national certification accepted by most employers and state licensing boards
- Exam: MT(AMT) Exam: 200-210 multiple-choice questions covering all major laboratory disciplines.
- Cost: $120-$250 (varies by application pathway)
- Renewal: 30 continuing education points per 3-year cycle through AMT's Certification Continuation Program (CCP).
State Laboratory License (State Department of Health or Clinical Laboratory division (varies by state)) — State authorization to perform clinical laboratory testing. Required in about 12 states
- Exam: Most states accept ASCP or AMT certification exam in lieu of a separate state exam. New York and California have additional state-specific examinations.
- Cost: $100-$300 (state application/renewal fee, varies by state)
- Renewal: Continuing education requirements vary by state. Typically 12-24 CE hours per renewal cycle. Some states accept national certification renewal in lieu of separate CE.
About 12 states require separate state licenses beyond national certification, with New York and California having particularly strict requirements including their own state exams. In the remaining 38 states, your ASCP or AMT certification is sufficient to work, though hospitals still expect national certification regardless of state law.
No interstate compact exists for medical laboratory scientists. You will need a separate license in each state where you practice if that state requires licensure.
Compensation
Medical Laboratory Scientist Salary
At $61k, medical laboratory scientists earn the same as cytotechnologists ($61k) and histotechnologists ($61k) but require shorter training than both. Pay varies significantly by region, with hospital labs typically offering higher salaries than outpatient clinics.
$61k/yr
median annual salary
You'll spend $70k-$123k and 4.3 years to start earning $61k — that's roughly 14-24 months to pay back your training costs. The payback period is reasonable for a bachelor's-level health care career.
Salaries vary by location and setting. Medical Laboratory Scientists in metropolitan areas and specialty practices typically earn more than the national median.
Source: Bureau of Labor Statistics, May 2024
HealthJob Analysis
Is It Worth It? 20-Year ROI
Medical laboratory science delivers $1,043k in 20-year net earnings with break-even in year 6. This is a solid ROI path because you start earning full salary immediately after certification with no residency or apprenticeship period. The ROI beats many bachelor's-level careers due to consistent demand and limited competition.
Medical Laboratory Scientist ROI
Net earnings over 20 years
$1.0M
Pre-tax 20-year estimate after required education and training costs; taxes and living expenses excluded.
How the 20-year estimate is calculated
Medical Laboratory Scientist Career ROI (20-year net earnings)
Track how education costs and earnings typically accumulate from enrollment through year 20.
Cumulative net earnings (USD)
The full chart keeps 20-year context. The detail chart below zooms in on early pathway years.
Sources: BLS, BLSSee Sources and methods.
Early-years detail
Years 0-8
Years 0-8. Scaled to early-year values. Black markers show key checkpoints.
Quick answers
- Is becoming a Medical Laboratory Scientist financially worth it?Typical 20-year net estimate: $1.0M (pre-tax, living expenses excluded).
- How much does training cost for a Medical Laboratory Scientist?Estimated required education and licensing cost to become a Medical Laboratory Scientist: $75k (range used: $60k-$91k). Breakdown: Bachelor's Degree in Medical Laboratory Science: $75k; MLS(ASCP) Certification Exam: $235; State Licensure (if required): $200.
- How long does it take to become a Medical Laboratory Scientist?Typical time to first paycheck is about 4.3 years. Typical time to enter the target Medical Laboratory Scientist role is about 4.3 years.
- How do you become a Medical Laboratory Scientist?See How to Become for pathway steps, timing, and credential requirements.
Detailed math
How 20-year net is built from each training and career phase.
| Phase | Time window | Gross earnings | Education/training cost | Net contribution | Sources |
|---|---|---|---|---|---|
Bachelor's Degree in Medical Laboratory Science Education | Years 0-3 (m0-m47) | $0 | -$75,000 | -$75,000 | |
MLS(ASCP) Certification Exam Training/Licensing | Year 4 (m51-m51) | $0 | -$235 | -$235 | |
State Licensure (if required) Training/Licensing | Year 4 (m52-m52) | $0 | -$200 | -$200 | |
Entry-Level Medical Laboratory Scientist Career | Years 4-7 (m52-m87) | $182,340 | $0 | $182,340 | |
Senior Medical Laboratory Scientist Career | Years 8-19 (m100-m239) | $875,000 | $0 | $875,000 | |
Model reconciliation Reconciliation | Years 0-20 (m0-m239) | $60,780 | $0 | $60,780 | None |
| 20-year totals | $1,118,120 | -$75,435 | $1,042,685 | Matches 20-year ROI formula | |
Sources and methods
Sources
Assumptions
- Pathway sequence and timing follow the cited training and licensing pathway for this role.BLSBLS
- Earnings benchmarks come from cited occupation wage references.BLSBLS
- Education and training cost uses College Scorecard tuition and cited pathway fees when needed.Source unavailable
- Cost allocation follows a model rule: short completed steps post in completion year; longer tuition steps are spread across phase years.Model ruleBLSBLS
- Taxes and living expenses are excluded from this estimate.Model rule
Medical laboratory science ranks in the middle tier for ROI among bachelor's-level health care careers. Physical therapy and occupational therapy offer higher long-term returns, while medical laboratory technician provides faster payback with lower education costs.
Future-Proofing
Medical Laboratory Scientist Job Outlook (2024–2034)
Demand is growing at 5.2% due to an aging population requiring more diagnostic testing and the expansion of personalized medicine requiring specialized lab analysis. Hospital consolidation is creating more centralized lab positions.
10-Year Growth
5.2%
Faster than average
Current Employment
345,600
jobs nationwide
HealthJob Analysis
Will AI Replace Medical Laboratory Scientist?
Total lab automation systems now independently run routine blood chemistry, hematology, and microbiology tests 24/7 with minimal human oversight. However, you remain essential for complex specimens that require scientific interpretation, troubleshooting automated failures, and ensuring quality assurance across all testing platforms. Companies like Abbott and Roche have deployed fully automated systems, but these enhance rather than replace your core analytical duties.
Total lab automation independently handles routine analysis 24/7; lab scientist essential for complex specimens, troubleshooting, and quality assurance.
WEF: AI, Robotics and Automation in Diagnostics (2024) · Roche: AI in Laboratory Workflows · PMC: Total Laboratory Automation Trends
Based on evidence-based AI impact methodology
Explore
Careers Similar to Medical Laboratory Scientist
These careers share overlapping laboratory skills and represent different points on the lab career ladder — technician requires less education, while cytotechnologist and histotechnologist offer specialized focus areas.
| Occupation | Median Salary | Training Time |
|---|---|---|
| Medical Laboratory Technician | $61k/yr | 2.3 yr |
| Cytotechnologist | $61k/yr | 5.8 yr |
| Histotechnologist | $61k/yr | 5.3 yr |
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Sources & Data
These references are used to build salary, training-path, and job-outlook estimates shown on this page.
- •Bureau of Labor Statistics, Occupational Outlook Handbook
- •O*NET OnLine
- •ASCP BOC
- •AMT
- •State licensing boards
- •HealthJob AI Impact Analysis
- •BLS Occupational Outlook Handbook - Clinical Laboratory Technologists and Technicians
Data last refreshed: April 2026