🇺🇸 ASCP Board of Certification

ASCP MLS Exam Prep — AI-Powered BOC Practice Questions

100 adaptive questions · 2 hours 30 minutes · Scaled score 0–999 · Pass at 400

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What is the ASCP BOC MLS exam?

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Exam Format

  • 100 computer-adaptive questions
  • 2 hours 30 minutes
  • Scaled score 0–999 · pass at 400
  • Delivered at Pearson VUE centres
  • Year-round testing windows
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Content Areas

  • Blood Banking (17–22%)
  • Chemistry (17–22%)
  • Hematology (17–22%)
  • Microbiology (17–22%)
  • Immunology · Lab Operations (5–10%)
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Eligibility

  • Bachelor's degree plus a NAACLS-accredited MLS programme, or
  • Bachelor's degree with qualifying clinical laboratory experience
  • Route-specific coursework in biology and chemistry
  • Application reviewed by the ASCP BOC

How MedLabPrep helps

MedLabPrep mirrors the ASCP BOC question style — concise clinical vignettes, US conventional units, and taxonomy level 2/3 reasoning — then adapts difficulty to your performance just like the real CAT exam.

  • ✓ Board-style vignettes with US conventional units
  • ✓ Weighted to the BOC content guideline
  • ✓ Adaptive difficulty CAT simulation
  • ✓ Image-based morphology and Gram stain questions
  • ✓ Full rationales with textbook citations

Tracks covered

  • MLS — Medical Laboratory Scientist
  • MLT — Medical Laboratory Technician
  • BB — Technologist in Blood Banking
  • H — Technologist in Hematology
  • M — Technologist in Microbiology
  • C — Technologist in Chemistry
  • SH — Specialist in Hematology
  • MB — Technologist in Molecular Biology
  • CG — Technologist in Cytogenetics
  • DLM — Diplomate in Laboratory Management
  • PBT — Phlebotomy Technician
  • CT — Cytotechnologist
🔬 Try a ASCP Question

Can you answer this ASCP question?

Question 1 of 3 · Score: 0/0

HematologyModerate

A 62-year-old man presents with fatigue. CBC: WBC 78.0 × 10⁹/L, Hgb 9.8 g/dL, PLT 145 × 10⁹/L. The differential shows a full spectrum of granulocytic maturation with 3% blasts, basophilia, and eosinophilia. LAP score is decreased. Which result would most likely confirm the diagnosis?

Select an answer above

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Common questions

Applying, eligibility, timelines and pay — each question opens a detailed guide.

How do I apply for ASCP certification?Eligibility check, ASCP account, transcripts, fees and booking your Pearson VUE seat.Read the guide →What are the ASCP eligibility requirements?Every MLS, MLT and specialist route with education and experience requirements.Read the guide →When should I apply, study and sit?A week-by-week ASCP timeline from graduation to exam day.Read the guide →What is the ASCP pass rate?Historical pass rates, how scaled scoring works and why candidates fail.Read the guide →How do I pass first time?Seven evidence-based habits shared by first-time passers.Read the guide →What does an MLS earn in the US?Salary ranges by credential, seniority and specialty.Read the guide →

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