Free Histotechnician - HT(ASCP) Practice Questions

Sample Practice Questions

Try these 10 sample questions from the Histotechnician - HT(ASCP) practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1What is the central preservation goal of tissue fixation before histologic examination?

   1. A. Increase tissue water content while leaving biomolecules mobile
   2. B. Maintain tissue morphology and the integrity of biomolecules
   3. C. Replace cellular proteins with embedding medium
   4. D. Remove membrane lipids to reveal cellular outlines

   Answer: B

   Explanation: The NICHD note says fixation is used to "maintain cell/tissue morphology and retain the integrity of biomolecules of interest." This preservation goal distinguishes fixation from dehydration or infiltration.

   Reference: Technical Note on Fixatives — Section I, Introduction

2. 2A small endoscopic biopsy becomes very brittle, with fine cracks throughout its section. Which processing mismatch best fits this finding?

   1. A. A schedule too long for the small biopsy
   2. B. A schedule too short for the small biopsy
   3. C. A dehydration step that leaves excess water in the biopsy
   4. D. A wax step too brief to support the biopsy

   Answer: A

   Explanation: Leica describes a small endoscopic biopsy that "has been over‑processed" and became "very brittle" with cracks. A schedule excessive for its size is the pertinent mismatch.

   Reference: 101 Steps to Better Histology — Step 20, Use an Appropriate Schedule

3. 3Which interface should remain visible in each routinely oriented skin section for dermatopathology review?

   1. A. Dermal-epidermal junction
   2. B. Dermal-adipose junction only
   3. C. Adipose-muscle junction only
   4. D. Vascular lumen alone

   Answer: A

   Explanation: Leica states that "The pathologist must be able to see the dermal-epidermal junction in each tissue section"; preserving that interface drives orientation during grossing and embedding.

   Reference: Dermatopathology for the Histology Lab — Overview

4. 4In an H&E stained section, which cellular component is basophilic because it contains DNA and nucleoprotein?

   1. A. Cytoplasmic contractile filaments
   2. B. Cell nucleus
   3. C. Collagenous extracellular fibers
   4. D. Lipid droplets

   Answer: B

   Explanation: Leica states that hematoxylin "stains acidic, or basophilic, structure including the cell nucleus (which contains DNA and nucleoprotein)". Nuclear DNA and nucleoprotein explain this basophilia.

   Reference: An Introduction to Routine and Special Staining — H&E Chemistry

5. 5Where must a U.S. laboratory make safety data sheets for its hazardous chemicals available to workers during their shift?

   1. A. Only at the chemical manufacturer's office
   2. B. Readily accessible in their work area
   3. C. Only inside a supervisor's locked file
   4. D. Only after an exposure incident occurs

   Answer: B

   Explanation: OSHA's laboratory provision requires employers to ensure SDSs "are readily accessible during each workshift to laboratory employees when they are in their work areas". Accessibility during work is the controlling requirement.

   Reference: OSHA Hazard Communication Standard, 29 CFR 1910.1200 — 29 CFR 1910.1200(b)(3)(ii)

6. 6Which enzyme-related process does fixation suppress to limit postmortem tissue autolysis?

   1. A. Proteolytic breakdown of cellular proteins
   2. B. Ribosomal synthesis of cellular proteins
   3. C. Polymerase copying of cellular DNA
   4. D. Mitochondrial synthesis of cellular ATP

   Answer: A

   Explanation: The NICHD note states that "Fixatives prevent postmortem decay or cellular degradation by deactivating proteolytic enzymes". Suppressing these enzymes helps prevent autolysis of the tissue.

   Reference: Technical Note on Fixatives — Section I, Introduction

7. 7A large fatty breast specimen receives a very short processing schedule. What tissue problem does Leica's example predict?

   1. A. Poor support and fragmentation of fibro-fatty tissue
   2. B. Excessively hard tissue with compression during cutting
   3. C. Well-supported tissue with only slight shrinkage
   4. D. Uniform wax support with intact fibro-fatty tissue

   Answer: A

   Explanation: Leica's under-processing example says "fibro‑fatty tissue is poorly supported and therefore fragmented". The short schedule does not adequately process this large fatty specimen.

   Reference: 101 Steps to Better Histology — Step 20, Use an Appropriate Schedule

8. 8What layers should an intact full-thickness skin section show from surface to depth?

   1. A. Epidermis, dermis, adipose tissue
   2. B. Dermis, epidermis, adipose tissue
   3. C. Adipose tissue, epidermis, dermis
   4. D. Epidermis, adipose tissue, dermis

   Answer: A

   Explanation: Leica describes full-thickness skin as containing "epidermis, dermis and adipose layers". Correctly oriented sections preserve that surface-to-depth relationship.

   Reference: Dermatopathology for the Histology Lab — Overview

9. 9What is the main structural basis of basophilic Nissl substance in a ganglion cell?

   1. A. Aggregates of lipid droplets and smooth endoplasmic reticulum
   2. B. Bundles of extracellular collagen and elastin
   3. C. Aggregates of endoplasmic reticulum and ribosomal RNA
   4. D. Clusters of glycogen granules and neutral mucin

   Answer: C

   Explanation: The Leica description identifies Nissl substance as "aggregations of endoplasmic reticulum and ribosomal RNA". This RNA-rich cytoplasmic material accounts for its basophilia.

   Reference: An Introduction to Routine and Special Staining — Figure 5, myenteric ganglion

10. 10A laboratory receives a labeled container of hazardous formalin. Under OSHA's laboratory Hazard Communication provision, what should be done with its incoming label?

    1. A. Remove it after the SDS is filed
    2. B. Replace it only when the container is opened
    3. C. Keep it from being removed or defaced
    4. D. Cover it with a blank local inventory label

    Answer: C

    Explanation: OSHA states, "Employers shall ensure that labels on incoming containers of hazardous chemicals are not removed or defaced". The original incoming label must remain legible.

    Reference: OSHA Hazard Communication Standard, 29 CFR 1910.1200 — 29 CFR 1910.1200(b)(3)(i)