CAP Pro Course - Histology - Special Stains

(based on 106 customer ratings)

Author: Carla Shoffeitt, MSM, HT(ASCP)
Reviewer: Alexandru Casapu, MBA, MLS(ASCP)CM, PBTCM

Continuing Education Credits

Objectives

  • Identify common staining methods that are routinely employed in the histology laboratory setting and discuss the clinical/diagnostic purpose for performing special stains.
  • Discuss processing considerations, including appropriate fixative based on special stain procedure, function of mordants, and microtomy.
  • Determine the use of appropriate controls as a quality assurance measure.
  • Discuss requirements for accurate dilution of special stains, including solution labeling, storage, safe-handling, and disposal.
  • Recognize staining errors and discuss troubleshooting considerations.

Course Outline

  • Identify common staining methods that are routinely employed in the histology laboratory setting and discuss the clinical/diagnostic purpose for performing special stains.
      • Clinical Necessity of Special Stains
      • Common Staining Methods for Demonstration of Amyloid and Carbohydrates
      • Common Staining Methods for Demonstration of Connective Tissue, Muscle Fibers, and Lipids
      • Common Staining Methods for Demonstration of Microorganisms
      • Common Methods for Demonstration of Minerals
      • Common Staining Methods for Demonstration of Nervous System Components
      • Both the Gomori's one-step trichrome stain and Masson's trichrome stain are used to distinguish collagen from muscle tissue. While both of these stain...
      • You are performing a Jones' methenamine silver stain on a kidney biopsy section. In reviewing the staining procedure, you take note of the gold chlori...
      • Dr. McTavish is reviewing a liver biopsy case in which glycogen storage disease is suspected. As such, he requests a periodic acid-Schiff (PAS) stain....
  • Discuss processing considerations, including appropriate fixative based on special stain procedure, function of mordants, and microtomy.
      • Processing Considerations and Appropriate Fixative for Lipid Demonstration
      • How Do Mordants Work?
      • Secondary Fixation: Mordant Precedes the Dye
      • Use of Mordant-Dye Complex in Single Staining Solution
      • Mordant Use Following Dye
      • Appropriate Fixative Selection Based on Special Stain Procedure
      • Microtomy Considerations for Special Stains
      • In the Verhoff-Van Gieson stain for elastic fibers, what is the function of ferric chloride in the Verhoff solution?
      • Which of the following is the MOST appropriate fixative for frozen (cryostat) sections intended for oil red O staining?
      • Alex is performing a Gomori's one-step trichrome stain on a liver biopsy. Which of the following best describes the chemical action of Bouin's fluid w...
  • Determine the use of appropriate controls as a quality assurance measure.
      • Quality Control (QC) of Special Stains
      • Use and Evaluation of Special Stain Control Sections
      • Appropriate Controls for Amyloid and Carbohydrate Staining Methods
      • Appropriate Controls for Connective Tissue, Muscle Fiber, and Lipid Staining Methods
      • Appropriate Controls for Mineral Demonstration
      • Appropriate Controls for Microorganism Staining Methods
      • Appropriate Controls for Nervous System Component Staining Methods
      • Quality control pertaining to special stains involves many factors, including clean glassware. Which of the following describes the MOST appropriate g...
      • Tess is reviewing several special stain procedures and needs to include verbiage specific to positive tissue controls. Which of the following statemen...
      • In reviewing the inventory of special stain positive control blocks, you observe several blocks labeled as "normal cerebral cortex." Which of the foll...
  • Discuss requirements for accurate dilution of special stains, including solution labeling, storage, safe-handling, and disposal.
      • Storage and Labeling Requirements for Special Stain Solutions
      • Safe Handling and Disposal of Special Stain Solutions
      • Creating Special Stain Solutions with the Use of Dry Powder Chemicals
      • Creating Special Stain Solutions of Accurate Dilution
      • When pouring staining solutions from a primary container into a secondary container, which of the following is a TRUE statement with regard to the sec...
      • The Jones' methenamine silver requires 3% sodium thiosulfate. If 100 mL of this solution is created, how much sodium thiosulfate is required for an ac...
      • You have been asked to decolorize a slide that was previously stained with hematoxylin & eosin. To do this, you will need to make up an 80% alcoho...
      • You have found a container of staining solution that is expired. The container label indicates that the solution is flammable. Which of the following ...
  • Recognize staining errors and discuss troubleshooting considerations.
      • Avoiding Problems with Staining Procedures and Staining Reagents
      • Troubleshooting Special Stains for Amyloid and Carbohydrates
      • Troubleshooting Special Stains for Connective Tissues, Muscle Fibers, and Lipids
      • Troubleshooting Methods of Mineral Demonstration
      • Troubleshooting Special Stains for Microorganisms
      • Troubleshooting Special Stains for Nervous System Components
      • Which of the following is the MOST likely cause of weak methylene blue counterstaining results in the Ziehl-Neelsen AFB stain?
      • In the Luxol Fast Blue (LFB) stain for myelin sheath, what processing step is required for accurate staining of myelin?
  • References
      • References

Additional Information

Level of Instruction: Intermediate
Intended Audience: This program is designed as an educational and training tool for HT, HTL, MLS, MT, MLT personnel, medical laboratory science students and interns, pathology residents, and practicing pathologists.
Author Information: Carla J. Shoffeitt, MSM, HT(ASCP) is the System Director of Anatomic Pathology for Emory Healthcare in Atlanta, Georgia. She holds a Master of Science Degree in Healthcare Management as well as a Bachelor of Science degree in Biology from Troy University, Troy, Alabama. She is certified as a Histotechnician and has 29 years of experience in the field of Histology.
Reviewer Information: Alexandru Casapu, MBA, MLS(ASCP)CM, PBTCM, has over 20 years of experience as a medical laboratory scientist, section supervisor, and laboratory manager. He is the former Director of Clinical Laboratory Technology Program at Georgia Piedmont Technical College. He is currently a Program Director at MediaLab, Inc. Alex holds BS degrees in Biology and Medical Technology from Clark Atlanta University and an MBA from the University of Georgia.

This course is part of the CAP Competency Assessment Hub.

See other included Pro courses

See other included instrument checklists