Practise Medical Laboratory Scientist (MLS) Certification Examination with a short sample and answer explanations. These are independent learning materials, not official exam questions or a pass prediction.
Exam outline and official sources
American Medical Technologists (AMT) · AMT Medical Laboratory Scientist Certification Competencies and Examination Specifications, ©2026; no separate effective date stated. The assigned Medical Technologist (MT) label maps to AMT's former MT designation, which transitioned to MLS beginning in early 2023.
This original 20-question sample covers selected topics across the outline. It does not reproduce official exam questions or cover every tested topic.
- AMT: Transition of Medical Technologist MT(AMT) to Medical Laboratory Scientist MLS(AMT)
- AMT Medical Laboratory Scientist Certification
- AMT MLS Certification Competencies and Examination Specifications
- APHL Verification and Validation Toolkit
- Westgard Rules and Multirule Quality Control
- CMS State Operations Manual, Appendix C: Laboratories and Laboratory Services
- NIDDK: Interpreting A1C—Principles of the A1C Assay
- NIDDK: Thyroid Tests
- Radiometer: Understanding the Different Values in Electrolyte Measurements
- Radiometer: Clinical Aspects of the Anion Gap
- ARUP Consult: Thalassemias
- ARUP Consult: Hemolytic Anemias
- ARUP Consult: Hemophilia—Factor VIII or IX Deficiency
- CDC/APHL: Technical Update for HIV Nucleic Acid Tests Approved for Diagnostic Purposes
- CDC STI Treatment Guidelines: HIV
- WHO: Safe Blood Transfusion Practice, Module 3—Blood Group Serology
- American Red Cross: A Compendium of Transfusion Practice Guidelines
- CDC: Laboratory Testing for Methicillin-Resistant Staphylococcus aureus
- CDC: Clinical Testing and Diagnosis for C. diff Infection
- CDC DPDx: Blood Specimens—Microscopic Examination
- Siemens Healthcare Diagnostics: Urinalysis Reagent Strips Package Insert
- CDC: Clinical Guidance for C. diff Infection Prevention in Acute Care Facilities
Medical Laboratory Scientist (MLS) Certification Examination
Start with 20 free questions, then review the explanations and any topics you missed.
Replicate measurements of a control have a mean of 150 mg/dL and a standard deviation of 3 mg/dL. What is the coefficient of variation?
Medical Laboratory Scientist (MLS) Certification Examination
Flashcards
General Laboratory
Laboratory quality: performance characteristics
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