Medical Laboratory Scientist Salary (2026): MLS Pay Guide for All 50 States

Certified medical laboratory scientists in the United States earn a national median of $68,734 per year — roughly $33.05/hour. MLS pay sits well above the U.S. median for all occupations and continues to rise faster than inflation, driven by chronic laboratory workforce shortages, the rapid growth of molecular diagnostics and pharmacogenomics testing, and increasing test volume across hospital, reference, and physician-office labs.

The national median is only the middle of the distribution. Three numbers describe the real range of MLS compensation:

• Entry-level MLSs (10th percentile): $42,499/year — typically newly board-certified MLS(ASCP) graduates in their first 1–2 years, often as generalist bench technologists at community hospital core labs.
• Median MLS (50th percentile): $68,734/year — the working MLS with 3–8 years of experience, frequently rotating across hematology, chemistry, microbiology, and immunohematology benches or specialized in one department.
• Top-earning MLSs (90th percentile): $110,303/year — senior MLSs in high-cost metros, ASCP-credentialed specialists (Specialist in Blood Banking — SBB, Specialist in Microbiology — SM, Specialist in Molecular Biology — MB), lab supervisors and managers, and reference-lab molecular technologists at LabCorp, Quest, Mayo, and ARUP.

Geographic location explains the largest share of the gap. MLSs in Kingston, NY earn a median of $112,696, while colleagues in Aguadilla, PR earn around $37,311. State licensure rules (California, Florida, New York, and others require state CLS licenses on top of national certification), the local mix of academic medical center versus community hospital labs, and the rapid expansion of reference-lab molecular testing all push pay in measurable ways beyond cost of living.

Medical Laboratory Scientist Salary vs MT/CLS Salary — Are They the Same?

Yes. Medical Laboratory Scientist (MLS) is the current preferred occupational title, replacing the older Medical Technologist (MT) and Clinical Laboratory Scientist (CLS) titles. Most clinical labs now use "MLS" or "CLS" on job postings; "medical technologist" remains common at older institutions. Every practicing MLS in the U.S. has earned a bachelor's degree from a program accredited by the National Accrediting Agency for Clinical Laboratory Sciences (NAACLS) or completed an equivalent path, and most hold national certification from the American Society for Clinical Pathology Board of Certification (ASCP BOC) — the dominant credential — or from American Medical Technologists (AMT). The same job goes by several names in salary surveys and job ads:

• Medical laboratory scientist salary / MLS salary / MLS(ASCP) pay
• Medical technologist salary / MT(ASCP) pay / MT(AMT) salary
• Clinical laboratory scientist salary / CLS salary (California-specific licensure)
• Blood bank technologist salary / SBB pay
• Molecular technologist salary / MB(ASCP) pay
• Microbiology technologist salary / SM(ASCP) pay

All of these reference SOC code 29-2010 in the Bureau of Labor Statistics Occupational Employment and Wage Statistics survey — the data source used throughout this site. Note that medical laboratory technicians (MLT, associate-degree level) are tracked under the same BLS group but typically earn 20–30% less than the bachelor's-prepared MLS scientists this site reports on.

Hourly Pay for Medical Laboratory Scientists

Hospital-based MLSs are paid hourly, with rare exceptions for salaried supervisor roles. The national median equivalent of $33.05/hour reflects a full-time 40-hour week, but actual paychecks vary widely by region, shift, and specialty department:

• West Coast and Northeast metros: commonly $35–55+/hour for experienced MLSs at academic medical centers and large reference labs; California (where the state CLS license is required and shortages are persistent), Oregon, Washington, and Massachusetts lead the MLS pay scale.
• Midwest and South: $24–35/hour median range, with metro academic centers and large hospital systems at the upper end of that band.
• Evening, overnight, and weekend differentials: typically add 10–25% to base; overnight core-lab tech roles in 24/7 hospitals frequently command persistent shortage premiums.
• Travel and per-diem MLSs: 13-week contracts at all-in weekly rates that frequently exceed local staff rates by 25–40%; travel MLS demand surged through the pandemic and remains structurally elevated.

Total compensation routinely runs 10–20% above headline base wages once shift differentials, ASCP recertification reimbursement, tuition support for specialist credentials, and 401(k) or 403(b) match are counted in.

2026 Medical Laboratory Scientist Salary Projection

MLS pay has grown at a compound annual rate of 3.04% over the past five years, driven by chronic laboratory workforce shortages widely documented by the ASCP and the American Society for Clinical Laboratory Science (ASCLS), the rapid expansion of molecular diagnostics and next-generation sequencing volume, and increasing demand from reference labs supporting precision-oncology and infectious-disease testing. The Bureau of Labor Statistics projects employment growth that supports continued upward pressure on wages, especially for blood-bank specialists, molecular technologists, and microbiology specialists at academic medical centers and large reference labs.

A senior SBB-credentialed MLS at a Stanford blood bank can earn nearly double what an entry-level generalist tech at a rural Mississippi community hospital takes home. Four factors explain almost all of that gap: location and state licensure, ASCP specialist credentials, lab setting, and employment model.

1. Location and State Licensure

Metropolitan areas with high costs of living offer the highest nominal MLS salaries. After adjusting using BEA Regional Price Parities, the real-dollar gap narrows but doesn't close. California, Oregon, Washington, Hawaii, and Massachusetts lead on a purchasing-power basis. Several states require separate state licensure on top of national ASCP or AMT certification, which both raises the bar to entry and supports higher pay:

• California CLS license — the most stringent state license in the country, requiring a year of post-bachelor clinical training; California labs pay the highest MLS salaries in the U.S. partly because of the licensure barrier.
• Florida, New York, Louisiana, Montana, Nevada, North Dakota, Rhode Island, Tennessee, West Virginia — state-level CLS or MT license required in addition to national certification.
• Health professional shortage areas (HPSAs) — rural and underserved markets frequently offer $5,000–$25,000 sign-on bonuses and federal student-loan repayment to fill MLS positions, particularly for blood-bank-trained or microbiology-trained scientists.
• Critical-access and rural community hospitals — pay above the regional median for MLSs willing to staff 24/7 operations as the sole on-shift technologist.

2. ASCP Specialist Credentials and Subspecialty

Entry-level MLSs holding only the generalist MLS(ASCP) credential start near the 10th percentile at $42,499. Within 3–5 years many add a department specialty role and pursue an ASCP specialist credential, which carries a measurable pay differential:

• Specialist in Blood Banking (SBB) — the highest-paying specialist credential. SBBs at hospital and community blood centers consistently earn premium pay, particularly in cities with active organ-transplant programs.
• Specialist in Microbiology (SM) and Specialist in Molecular Biology (MB) — both reliably above the MLS median, with MB roles in molecular labs growing fastest with NGS and PCR test volume.
• Specialist in Hematology (SH), Specialist in Chemistry (SC), Specialist in Cytometry (SCYM), Specialist in Laboratory Safety (SLS) — additional ASCP credentials supporting subspecialty pay.
• Diplomate in Laboratory Management (DLM) — required or preferred for lab-manager and lab-director track roles.

Senior MLSs with 10+ years of experience and one or more specialist credentials frequently reach the 90th percentile at $110,303.

3. Lab Setting: Hospital vs Reference Lab vs Blood Center vs Physician Office

Where you bench-work matters as much as how long you've worked:

• Academic medical center and trauma-center hospital labs: highest-paying hospital MLS setting in most regions, with 24/7 staffing premiums and access to subspecialty rotations.
• Reference labs (LabCorp, Quest Diagnostics, ARUP, Mayo Clinic Laboratories, Eurofins): the top of the MLS pay scale for high-throughput molecular and specialty testing; many positions are second- and third-shift in centralized lab operations.
• Community hospital core labs: reliable mid-range pay with broad bench rotation across hematology, chemistry, microbiology, urinalysis, and immunohematology.
• Community blood centers and hospital blood banks: reliable above-median pay for SBB-credentialed scientists; donor center and transfusion-service roles both well-compensated.
• Physician-office labs and outpatient clinic labs: typically the lowest-paying MLS setting, though hours are predictable and shifts daytime-only.
• Public health labs (state and federal), CDC, and forensic toxicology labs: stable pay with strong pension eligibility and federal-loan-forgiveness pathways through PSLF.
• Industry, biotech, pharma QC, and clinical research labs: often pay above clinical-lab base for MLSs who transition into industry QC, validation, or research roles.

4. Employment Model: Staff vs Travel vs Per-Diem vs Lab Management

Staff MLSs receive benefits, retirement contributions, ASCP recertification reimbursement, and tuition support on top of base pay. Travel MLSs sign 13-week contracts through agencies (Aya, Cross Country, Soliant) at all-in weekly rates that frequently exceed staff annual equivalents by 25–40%; the travel MLS market is small but has grown rapidly with the lab workforce shortage. Per-diem MLSs work shifts on demand at 25–40% above the staff hourly rate. Lab supervisors, technical specialists, and lab managers — often with the DLM credential — earn at or above the 90th percentile of the bench MLS scale.

For a complete city-by-city breakdown of medical laboratory scientist salaries — including BLS percentile data (10th, 25th, 50th/median, 75th, 90th), local cost-of-living adjustments, and 2026 salary projections — browse the 1,688+ metro areas tracked in our dataset below.