ASCP Blood Banking Technologist Exam Guide 2026: Train Panel Logic First
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Which blood group system is defined by the presence of N-acetylgalactosamine on the H antigen?
Blood Group Systems
Question · Easy
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BB(ASCP) prep should start with eligibility and antibody problem-solving, then move into components, reactions, HDFN, quality, and regulations.
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A patient types as group O with anti-A and anti-B reagents. What is expected in the reverse typing?
Introduction & Exam Overview
1.1 Current Exam Facts
Study guide
What is the most common cause of ABO discrepancies in elderly patients?
Question · Medium
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Which Rh antigen is the most immunogenic after D?
A patient has a positive direct antiglobulin test (DAT) with anti-IgG only. Which condition is most consistent?
Which blood group system antibodies are characteristically associated with dosage?
1.2 Eligibility Routes and Application
Anti-Fya and anti-Fyb belong to which blood group system?
Which characteristic best describes Kidd system antibodies?
What is the purpose of the immediate spin crossmatch?
Compatibility Testing
A three-cell antibody screen is positive in all three cells at the antiglobulin phase. What is the most likely interpretation?
1.3 CMP, Credential Citation, and BB vs SBB
In antibody identification, the rule of three requires at least how many antigen-positive and antigen-negative cells to confirm an antibody?
What technique is used to remove IgG antibodies from red blood cells for subsequent testing?
A patient with anti-Jka needs two units of RBCs urgently. The crossmatch is incompatible with Jk(a+) donors. What is the best approach?
What is the shelf life of packed red blood cells stored in CPDA-1 at 1-6 degrees C?
Component Preparation
Donors and Collection
2.1 Donor Qualification
At what temperature should fresh frozen plasma (FFP) be stored?
Which component is prepared by thawing FFP at 1-6 degrees C and collecting the cold-insoluble precipitate?
What is the primary purpose of leukoreduction of blood components?
When is irradiation of blood components indicated?
2.2 Collection Methods and Adverse Reactions
A patient develops fever, chills, and back pain during a red blood cell transfusion. Posttransfusion plasma is hemolyzed and pink. What type of reaction is most likely?
Transfusion Reactions
Which transfusion reaction presents with urticaria (hives) without fever and is treated with antihistamines?
TRALI (transfusion-related acute lung injury) typically presents within what time frame after transfusion?
A patient develops jaundice and a falling hemoglobin 7 days after transfusion. The DAT is now positive. What reaction is most likely?
2.3 Special Donations
Which antibody is most commonly associated with severe hemolytic disease of the fetus and newborn (HDFN)?
Hemolytic Disease
When should Rh immune globulin (RhIG) be administered during pregnancy?
The Kleihauer-Betke test is used to detect what?
A cord blood sample has a positive DAT with anti-IgG. The mother is group O and the baby is group A. What is the most likely cause?
Processing, Storage, and Component QC
3.1 Processing: FDA/AABB Requirements, Testing, and Labeling
What is the standard dose of RhIG, and how much fetomaternal hemorrhage does it cover?
Which federal agency regulates blood banking facilities in the United States?
Regulatory Compliance
What does AABB stand for, and what is its role in blood banking?
How long must blood bank records be retained according to FDA regulations?
3.2 Anticoagulants, Additives, and Storage Temperatures
In quality management, what is a deviation in blood banking?
Quality Management
What is the purpose of Levey-Jennings charts in blood bank quality control?
Which test is used to differentiate between an in vivo and in vitro hemolysis during a transfusion reaction workup?
Which antibody is enhanced by enzyme treatment of reagent red blood cells?
3.3 Transportation, Stored-Product Properties, and Expiration
Which reagent is used to distinguish anti-A1 from anti-A in a subgroup investigation?
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