BLOOD BANK TECHNOLOGIST BB CERTIFICATION EXAM 2026
Latest Comprehensive Study Guide with Practice Questions
Immunohematology Review • Detailed Rationales • Verified
Answers • Success Workbook
EXAM INSTRUCTIONS:
• Select the single best answer for each question
• Answers are highlighted in bold for quick reference
• Detailed rationales are provided for comprehensive understanding
• Questions are aligned with ASCP BOC BB Content Specifications
• AABB Standards for Blood Banks and Transfusion Services, 35th Edition
(effective April 1, 2026) serves as the regulatory reference
SECTION 1: BLOOD PRODUCTS (15–20%)
Question 1:
According to AABB Standards, 35th Edition, which of the following is the
maximum storage temperature for whole blood and red blood cell
components?
A) 1°C to 6°C
B) 1°C to 6°C
C) 2°C to 8°C
D) 4°C to 10°C
Rationale: AABB Standards require that whole blood and red blood cell
components be stored at 1°C to 6°C. This temperature range preserves RBC
viability and function while minimizing bacterial growth. Storage at
temperatures outside this range can compromise RBC integrity and increase
the risk of transfusion reactions.
,Question 2:
A donor presents for whole blood donation. Which of the following is the
minimum acceptable hemoglobin level for a female donor according to AABB
Standards?
A) 11.0 g/dL
B) 12.0 g/dL
C) 12.5 g/dL
D) 13.0 g/dL
Rationale: AABB Standards require a minimum hemoglobin of 12.5 g/dL for
female donors and 13.0 g/dL for male donors. The 35th Edition maintains
these requirements for donor qualification to ensure donor safety and
adequate RBC mass.
Question 3:
A unit of whole blood is collected and processed into components. Which of
the following components has the shortest storage shelf life?
A) Red blood cells (leukoreduced)
B) Platelets (room temperature, continuous agitation)
C) Fresh frozen plasma (FFP)
D) Cryoprecipitated AHF
Rationale: Platelets stored at room temperature (20–24°C) with continuous
agitation have a shelf life of only 5 days (or up to 7 days with bacterial
detection systems). RBCs can be stored for up to 42 days, FFP for up to 12
months frozen, and cryoprecipitate for up to 12 months frozen.
Question 4:
A pathogen-reduced cryoprecipitated fibrinogen complex is prepared in
accordance with manufacturer instructions. This new standard was added in
which edition of AABB Standards?
A) 33rd Edition
B) 34th Edition
,C) 35th Edition
D) 32nd Edition
Rationale: The 35th Edition of AABB Standards for Blood Banks and
Transfusion Services (effective April 1, 2026) added a new standard requiring
preparation of pathogen-reduced cryoprecipitated fibrinogen complex in
accordance with manufacturer instructions. This reflects advances in
pathogen reduction technology and evolving clinical practice.
Question 5:
Which of the following is the primary indication for transfusion of fresh frozen
plasma (FFP)?
A) Volume replacement
B) Correction of multiple coagulation factor deficiencies
C) Platelet replacement
D) Albumin replacement
Rationale: FFP is primarily indicated for correction of multiple coagulation
factor deficiencies, such as in disseminated intravascular coagulation (DIC),
liver disease, or massive transfusion. It contains all coagulation factors and is
not indicated for volume replacement alone.
Question 6:
A patient requires a transfusion of platelets. Which of the following is the
minimum acceptable platelet count in a standard single-donor apheresis
platelet unit?
A) 2.0 × 10¹¹ platelets
B) 3.0 × 10¹¹ platelets
C) 4.0 × 10¹¹ platelets
D) 5.0 × 10¹¹ platelets
Rationale: AABB Standards require a minimum of 3.0 × 10¹¹ platelets per
standard single-donor apheresis platelet unit. This ensures therapeutic
efficacy for the recipient. Pooled random-donor platelet concentrates typically
contain a minimum of 5.5 × 10¹⁰ platelets per unit.
, Question 7:
A donor has a history of travel to a malaria-endemic region. According to FDA
regulations, which of the following is the appropriate deferral period?
A) No deferral is needed
B) 3 months after return from an endemic area
C) 6 months after return from an endemic area
D) 12 months after return from an endemic area
Rationale: FDA regulations require a 3-month deferral for donors who have
traveled to malaria-endemic regions. This period allows for detection of
malaria infection. Donors with a history of malaria may be permanently
deferred in some cases.
Question 8:
A unit of red blood cells is leukoreduced. Which of the following is the
acceptable limit for residual white blood cells?
A) < 1.0 × 10⁶ WBCs per unit
B) < 5.0 × 10⁶ WBCs per unit
C) < 1.0 × 10⁷ WBCs per unit
D) < 5.0 × 10⁷ WBCs per unit
Rationale: Leukoreduction requires that the residual WBC count be less than
5.0 × 10⁶ per unit. This reduces the risk of febrile non-hemolytic transfusion
reactions, HLA alloimmunization, and transmission of cell-associated viruses
such as CMV.
Question 9:
Cryoprecipitated antihemophilic factor (cryoprecipitate) is indicated for
which of the following conditions?
A) Hemophilia A with factor VIII levels > 5%
B) Hypofibrinogenemia
C) Hemophilia B
D) Thrombocytopenia
Latest Comprehensive Study Guide with Practice Questions
Immunohematology Review • Detailed Rationales • Verified
Answers • Success Workbook
EXAM INSTRUCTIONS:
• Select the single best answer for each question
• Answers are highlighted in bold for quick reference
• Detailed rationales are provided for comprehensive understanding
• Questions are aligned with ASCP BOC BB Content Specifications
• AABB Standards for Blood Banks and Transfusion Services, 35th Edition
(effective April 1, 2026) serves as the regulatory reference
SECTION 1: BLOOD PRODUCTS (15–20%)
Question 1:
According to AABB Standards, 35th Edition, which of the following is the
maximum storage temperature for whole blood and red blood cell
components?
A) 1°C to 6°C
B) 1°C to 6°C
C) 2°C to 8°C
D) 4°C to 10°C
Rationale: AABB Standards require that whole blood and red blood cell
components be stored at 1°C to 6°C. This temperature range preserves RBC
viability and function while minimizing bacterial growth. Storage at
temperatures outside this range can compromise RBC integrity and increase
the risk of transfusion reactions.
,Question 2:
A donor presents for whole blood donation. Which of the following is the
minimum acceptable hemoglobin level for a female donor according to AABB
Standards?
A) 11.0 g/dL
B) 12.0 g/dL
C) 12.5 g/dL
D) 13.0 g/dL
Rationale: AABB Standards require a minimum hemoglobin of 12.5 g/dL for
female donors and 13.0 g/dL for male donors. The 35th Edition maintains
these requirements for donor qualification to ensure donor safety and
adequate RBC mass.
Question 3:
A unit of whole blood is collected and processed into components. Which of
the following components has the shortest storage shelf life?
A) Red blood cells (leukoreduced)
B) Platelets (room temperature, continuous agitation)
C) Fresh frozen plasma (FFP)
D) Cryoprecipitated AHF
Rationale: Platelets stored at room temperature (20–24°C) with continuous
agitation have a shelf life of only 5 days (or up to 7 days with bacterial
detection systems). RBCs can be stored for up to 42 days, FFP for up to 12
months frozen, and cryoprecipitate for up to 12 months frozen.
Question 4:
A pathogen-reduced cryoprecipitated fibrinogen complex is prepared in
accordance with manufacturer instructions. This new standard was added in
which edition of AABB Standards?
A) 33rd Edition
B) 34th Edition
,C) 35th Edition
D) 32nd Edition
Rationale: The 35th Edition of AABB Standards for Blood Banks and
Transfusion Services (effective April 1, 2026) added a new standard requiring
preparation of pathogen-reduced cryoprecipitated fibrinogen complex in
accordance with manufacturer instructions. This reflects advances in
pathogen reduction technology and evolving clinical practice.
Question 5:
Which of the following is the primary indication for transfusion of fresh frozen
plasma (FFP)?
A) Volume replacement
B) Correction of multiple coagulation factor deficiencies
C) Platelet replacement
D) Albumin replacement
Rationale: FFP is primarily indicated for correction of multiple coagulation
factor deficiencies, such as in disseminated intravascular coagulation (DIC),
liver disease, or massive transfusion. It contains all coagulation factors and is
not indicated for volume replacement alone.
Question 6:
A patient requires a transfusion of platelets. Which of the following is the
minimum acceptable platelet count in a standard single-donor apheresis
platelet unit?
A) 2.0 × 10¹¹ platelets
B) 3.0 × 10¹¹ platelets
C) 4.0 × 10¹¹ platelets
D) 5.0 × 10¹¹ platelets
Rationale: AABB Standards require a minimum of 3.0 × 10¹¹ platelets per
standard single-donor apheresis platelet unit. This ensures therapeutic
efficacy for the recipient. Pooled random-donor platelet concentrates typically
contain a minimum of 5.5 × 10¹⁰ platelets per unit.
, Question 7:
A donor has a history of travel to a malaria-endemic region. According to FDA
regulations, which of the following is the appropriate deferral period?
A) No deferral is needed
B) 3 months after return from an endemic area
C) 6 months after return from an endemic area
D) 12 months after return from an endemic area
Rationale: FDA regulations require a 3-month deferral for donors who have
traveled to malaria-endemic regions. This period allows for detection of
malaria infection. Donors with a history of malaria may be permanently
deferred in some cases.
Question 8:
A unit of red blood cells is leukoreduced. Which of the following is the
acceptable limit for residual white blood cells?
A) < 1.0 × 10⁶ WBCs per unit
B) < 5.0 × 10⁶ WBCs per unit
C) < 1.0 × 10⁷ WBCs per unit
D) < 5.0 × 10⁷ WBCs per unit
Rationale: Leukoreduction requires that the residual WBC count be less than
5.0 × 10⁶ per unit. This reduces the risk of febrile non-hemolytic transfusion
reactions, HLA alloimmunization, and transmission of cell-associated viruses
such as CMV.
Question 9:
Cryoprecipitated antihemophilic factor (cryoprecipitate) is indicated for
which of the following conditions?
A) Hemophilia A with factor VIII levels > 5%
B) Hypofibrinogenemia
C) Hemophilia B
D) Thrombocytopenia
