100+ Free ASCP HTL Practice Questions
Pass your Scientist in Histotechnology (HTL) exam on the first try — instant access, no signup required.
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Key Facts: ASCP HTL Exam
100
Exam Questions
ASCP BOC HTL exam page
2h 30m
Exam Time
ASCP BOC HTL exam page
400
Minimum Passing Score
ASCP 100-999 scoring scale
$260
Application Fee
ASCP BOC HTL exam page
75%
First-Time Pass Rate
ASCP BOC published data
ASCP BOC lists the HTL exam as 100 questions in 2 hours 30 minutes with scores reported on a 100-999 scale and 400 as the minimum passing score. The current HTL application fee is $260. ASCP's HTL content guideline covers advanced tissue processing, staining, microtomy, IHC, molecular pathology, and laboratory operations. BLS reports strong demand for histotechnology scientists in clinical and anatomic pathology laboratories.
About the ASCP HTL Exam
The ASCP HTL exam certifies scientists in histotechnology in advanced tissue fixation, processing, embedding, microtomy, H&E and special staining, immunohistochemistry, molecular pathology techniques, laboratory management, quality assurance, microscopy, and advanced specimen handling. ASCP exams are delivered at Pearson VUE test centers.
Questions
100 scored questions
Time Limit
2 hours 30 minutes
Passing Score
Scaled score 400 (100-999)
Exam Fee
$260 (ASCP BOC / Pearson VUE)
ASCP HTL Exam Content Outline
Tissue Processing
Advanced fixation, dehydration, clearing, embedding, decalcification, and specimen handling protocols
Microtomy
Paraffin sectioning, cryostat operation, frozen sections, and troubleshooting cutting artifacts
Staining Techniques
H&E, special stains (PAS, trichrome, AFB, GMS, Prussian blue, reticulin, Congo red), dye chemistry, and troubleshooting
Immunohistochemistry
Antigen retrieval, antibodies, detection systems, chromogens, controls, and troubleshooting
Molecular Pathology
In situ hybridization, PCR-based methods, and molecular diagnostic techniques in histology
Laboratory Management & QA
Quality assurance, CLIA compliance, laboratory safety, personnel management, and regulatory requirements
How to Pass the ASCP HTL Exam
What You Need to Know
- Passing score: Scaled score 400 (100-999)
- Exam length: 100 questions
- Time limit: 2 hours 30 minutes
- Exam fee: $260
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
ASCP HTL Study Tips from Top Performers
Frequently Asked Questions
How many questions are on the ASCP HTL exam?
ASCP BOC lists the HTL exam at 100 questions with a 2 hour 30 minute testing time. Questions are multiple choice and mapped to the HTL content guideline domains.
What score do I need to pass ASCP HTL?
ASCP reports exam scores on a 100-999 scale. The minimum passing score is 400.
What topics are tested on ASCP HTL?
The HTL guideline domains cover staining techniques (25-30%), tissue processing (15-20%), immunohistochemistry (15-20%), microtomy (10-15%), molecular pathology (10-15%), and laboratory management and QA (10-15%).
How much is the ASCP HTL exam fee?
The current ASCP BOC HTL application fee is $260 (non-refundable) per the ASCP HTL credential page.
How should I study for ASCP HTL?
Use blueprint-weighted prep: 1) master H&E and special stain principles first (highest weight), 2) study tissue processing and fixation, 3) learn IHC and molecular pathology concepts, 4) review laboratory management and QA procedures.
What are the ASCP HTL eligibility requirements?
Candidates typically need a bachelor's degree with histotechnology or biological science coursework plus clinical training from an accredited program. Multiple eligibility routes exist — verify your specific route on the ASCP BOC HTL page before applying.