2025 SBB Exam Mastery Guide: 150 Questions &
Detailed Answers for Immunohematology Success
SBB Clinical Immunohematology and Transfusion Exam 2025 Study
Guide
Exam Overview:
• Certification: Specialist in Blood Banking (SBB)
• Focus Areas: Blood group systems, pretransfusion testing, transfusion practices, immunohematologic disease,
quality systems, and laboratory management.
• Question Types: Multiple choice, case-based scenarios, application and analysis.
SECTION 1: Blood Group Systems
Key Concepts:
• ABO, Rh (including weak D types), Kell, Duffy, Kidd, MNS, Lutheran, P, Lewis, Ii, Diego, and more.
• Inheritance patterns and molecular genetics.
• Antigen frequencies and clinical significance of antibodies.
Study Tips:
• Master the biochemistry of ABO and Rh antigens.
• Know how to interpret genotypes and phenotypes.
• Focus on antigen-antibody interactions and hemolytic potential.
SECTION 2: Pretransfusion Testing
Key Concepts:
• ABO/Rh typing, antibody screen and identification.
• Crossmatch techniques: immediate spin, AHG, electronic.
• Antibody panel interpretation and rule-outs.
• DAT (Direct Antiglobulin Test) and IAT (Indirect Antiglobulin Test).
,Study Tips:
• Practice reading complex antibody panels.
• Review compatibility testing protocols and exceptions.
• Understand antibody enhancement techniques (e.g., PEG, enzymes).
SECTION 3: Transfusion Practices
Key Concepts:
• Indications and dosing for RBCs, platelets, FFP, cryoprecipitate.
• Special product types: leukoreduced, irradiated, washed, CMV-negative.
• Massive transfusion protocols.
• Emergency and pediatric transfusion practices.
Study Tips:
• Know when and why each blood product is used.
• Memorize key storage temps and shelf lives.
• Learn transfusion thresholds and decision-making algorithms.
SECTION 4: Hemolytic Disease & Autoimmune Disorders
Key Concepts:
• Hemolytic Disease of the Fetus and Newborn (HDFN).
• Warm vs cold autoimmune hemolytic anemia (AIHA).
• Drug-induced hemolysis.
• DAT interpretations and elution techniques.
Study Tips:
• Differentiate between alloimmune and autoimmune causes.
• Learn protocols for antenatal testing and RhIg administration.
• Understand the role of titration in HDFN.
SECTION 5: Molecular Testing & Advanced Immunohematology
Key Concepts:
• Molecular genotyping of blood group antigens.
• Null phenotypes and hybrid genes.
• Zygosity testing, especially for Rh.
Study Tips:
• Focus on SNP analysis and DNA-based typing methods.
, • Understand when molecular testing is preferred over serology.
SECTION 6: Quality Systems & Laboratory Operations
Key Concepts:
• AABB standards, FDA regulations, CLIA.
• Quality control, quality assurance, proficiency testing.
• Validation and verification of methods.
• Lab safety, SOPs, documentation.
Study Tips:
• Study the AABB Technical Manual and Quality System Essentials.
• Know regulatory compliance and incident reporting processes.
SECTION 7: Case Studies & Problem Solving
Key Concepts:
• Clinical scenarios involving antibody identification, transfusion reactions, compatibility testing, and product
selection.
Study Tips:
• Work through practice cases with multiple antibodies.
• Apply root cause analysis to transfusion errors.
Recommended Resources:
• AABB Technical Manual (20th edition or later)
• Modern Blood Banking & Transfusion Practices – Harmening
• Immunohematology: Principles and Practice – Daniels
• SBB Certification Review Guides from ASCP and other providers
• Quizlet or Anki flashcards for memorization
6-Week Study Planner – SBB Clinical Immunohematology &
Transfusion Exam 2025
Week 1: Blood Group Systems + Antibody Identification Basics
, Goal: Build a solid foundation in immunohematology.
• Read: ABO/Rh, Kell, Kidd, Duffy, MNS systems (AABB Manual & Harmening)
• Memorize: Key antigen frequencies, inheritance patterns
• Practice: Panel interpretations with single antibodies
• Task: Make flashcards for antigens/antibodies
Week 2: Advanced Immunohematology
Goal: Handle complex antibody workups and problem-solving.
• Read: Warm vs. cold autoantibodies, adsorption techniques, enzyme panels
• Practice: Panels with multiple antibodies, autoantibodies
• Focus: DAT interpretation, selected cell panels
• Task: Create a troubleshooting flowchart
Week 3: Transfusion Practices & Reactions
Goal: Master transfusion medicine essentials.
• Read: Indications for components, modifications (irradiation, leukoreduction)
• Study: TRALI, TACO, HTR, FNHTR – recognition and management
• Task: Analyze sample transfusion reaction workups
• Task: Review MTP and emergency release policies
Week 4: Quality, Regulations & Lab Management
Goal: Understand lab operations and regulatory compliance.
• Read: AABB Standards, FDA regulations, CLIA, CAP checklist
• Study: SOP management, validations, QC/QA programs
• Task: Map out a basic QA plan for a transfusion service
Week 5: Research Methods + Apheresis & Cell Therapy
Goal: Prepare for research and stem cell-related topics.
• Read: Apheresis procedures, stem cell collection
• Study: Study designs, IRB, informed consent, statistics basics
• Task: Review journal articles and summarize findings
Week 6: Case Studies + Mock Exam
Goal: Synthesize learning and simulate the test experience.
• Review: Flashcards, charts, high-yield summaries
• Practice: Complex case studies (AABB News or textbooks)
• Take: Full-length practice exam (BOC or 3rd-party test bank)
• Task: Review weak areas, refine notes
Detailed Answers for Immunohematology Success
SBB Clinical Immunohematology and Transfusion Exam 2025 Study
Guide
Exam Overview:
• Certification: Specialist in Blood Banking (SBB)
• Focus Areas: Blood group systems, pretransfusion testing, transfusion practices, immunohematologic disease,
quality systems, and laboratory management.
• Question Types: Multiple choice, case-based scenarios, application and analysis.
SECTION 1: Blood Group Systems
Key Concepts:
• ABO, Rh (including weak D types), Kell, Duffy, Kidd, MNS, Lutheran, P, Lewis, Ii, Diego, and more.
• Inheritance patterns and molecular genetics.
• Antigen frequencies and clinical significance of antibodies.
Study Tips:
• Master the biochemistry of ABO and Rh antigens.
• Know how to interpret genotypes and phenotypes.
• Focus on antigen-antibody interactions and hemolytic potential.
SECTION 2: Pretransfusion Testing
Key Concepts:
• ABO/Rh typing, antibody screen and identification.
• Crossmatch techniques: immediate spin, AHG, electronic.
• Antibody panel interpretation and rule-outs.
• DAT (Direct Antiglobulin Test) and IAT (Indirect Antiglobulin Test).
,Study Tips:
• Practice reading complex antibody panels.
• Review compatibility testing protocols and exceptions.
• Understand antibody enhancement techniques (e.g., PEG, enzymes).
SECTION 3: Transfusion Practices
Key Concepts:
• Indications and dosing for RBCs, platelets, FFP, cryoprecipitate.
• Special product types: leukoreduced, irradiated, washed, CMV-negative.
• Massive transfusion protocols.
• Emergency and pediatric transfusion practices.
Study Tips:
• Know when and why each blood product is used.
• Memorize key storage temps and shelf lives.
• Learn transfusion thresholds and decision-making algorithms.
SECTION 4: Hemolytic Disease & Autoimmune Disorders
Key Concepts:
• Hemolytic Disease of the Fetus and Newborn (HDFN).
• Warm vs cold autoimmune hemolytic anemia (AIHA).
• Drug-induced hemolysis.
• DAT interpretations and elution techniques.
Study Tips:
• Differentiate between alloimmune and autoimmune causes.
• Learn protocols for antenatal testing and RhIg administration.
• Understand the role of titration in HDFN.
SECTION 5: Molecular Testing & Advanced Immunohematology
Key Concepts:
• Molecular genotyping of blood group antigens.
• Null phenotypes and hybrid genes.
• Zygosity testing, especially for Rh.
Study Tips:
• Focus on SNP analysis and DNA-based typing methods.
, • Understand when molecular testing is preferred over serology.
SECTION 6: Quality Systems & Laboratory Operations
Key Concepts:
• AABB standards, FDA regulations, CLIA.
• Quality control, quality assurance, proficiency testing.
• Validation and verification of methods.
• Lab safety, SOPs, documentation.
Study Tips:
• Study the AABB Technical Manual and Quality System Essentials.
• Know regulatory compliance and incident reporting processes.
SECTION 7: Case Studies & Problem Solving
Key Concepts:
• Clinical scenarios involving antibody identification, transfusion reactions, compatibility testing, and product
selection.
Study Tips:
• Work through practice cases with multiple antibodies.
• Apply root cause analysis to transfusion errors.
Recommended Resources:
• AABB Technical Manual (20th edition or later)
• Modern Blood Banking & Transfusion Practices – Harmening
• Immunohematology: Principles and Practice – Daniels
• SBB Certification Review Guides from ASCP and other providers
• Quizlet or Anki flashcards for memorization
6-Week Study Planner – SBB Clinical Immunohematology &
Transfusion Exam 2025
Week 1: Blood Group Systems + Antibody Identification Basics
, Goal: Build a solid foundation in immunohematology.
• Read: ABO/Rh, Kell, Kidd, Duffy, MNS systems (AABB Manual & Harmening)
• Memorize: Key antigen frequencies, inheritance patterns
• Practice: Panel interpretations with single antibodies
• Task: Make flashcards for antigens/antibodies
Week 2: Advanced Immunohematology
Goal: Handle complex antibody workups and problem-solving.
• Read: Warm vs. cold autoantibodies, adsorption techniques, enzyme panels
• Practice: Panels with multiple antibodies, autoantibodies
• Focus: DAT interpretation, selected cell panels
• Task: Create a troubleshooting flowchart
Week 3: Transfusion Practices & Reactions
Goal: Master transfusion medicine essentials.
• Read: Indications for components, modifications (irradiation, leukoreduction)
• Study: TRALI, TACO, HTR, FNHTR – recognition and management
• Task: Analyze sample transfusion reaction workups
• Task: Review MTP and emergency release policies
Week 4: Quality, Regulations & Lab Management
Goal: Understand lab operations and regulatory compliance.
• Read: AABB Standards, FDA regulations, CLIA, CAP checklist
• Study: SOP management, validations, QC/QA programs
• Task: Map out a basic QA plan for a transfusion service
Week 5: Research Methods + Apheresis & Cell Therapy
Goal: Prepare for research and stem cell-related topics.
• Read: Apheresis procedures, stem cell collection
• Study: Study designs, IRB, informed consent, statistics basics
• Task: Review journal articles and summarize findings
Week 6: Case Studies + Mock Exam
Goal: Synthesize learning and simulate the test experience.
• Review: Flashcards, charts, high-yield summaries
• Practice: Complex case studies (AABB News or textbooks)
• Take: Full-length practice exam (BOC or 3rd-party test bank)
• Task: Review weak areas, refine notes
