Specialist in Blood Banking SBB Certification Exam 2026
Latest Comprehensive Study Guide with Practice Questions,
Transfusion Medicine Review, Verified Answers, Detailed
Rationales, Success Workbook
QUESTION 1
The ASCP Board of Certification (BOC) Specialist in Blood Banking (SBB)
examination contains how many multiple-choice questions, and how much time is
allotted?
A) 100 questions, 2 hours
B) 100 questions, 2 hours 30 minutes
C) 150 questions, 3 hours
D) 200 questions, 3 hours 30 minutes
Answer: B) 100 questions, 2 hours 30 minutes
Rationale: The SBB(ASCP) certification examination is composed of 100
multiple-choice questions given in a 2 hour 30 minute time frame. The exam is
administered using computer adaptive testing (CAT) format, where each
examinee receives a unique set of questions tailored to their ability level. Questions
cannot be skipped or revisited. Results are reported on a scaled score of 100 to 999,
with a minimum passing score of 400.
QUESTION 2
According to the ASCP BOC Content Guideline, which content area carries the
largest percentage weight on the SBB examination?
A) Blood Products (10-15%)
B) Serologic and Molecular Testing (20-25%)
C) Immunology and Physiology (15-25%)
D) Transfusion Practice (15-20%)
Answer: C) Immunology and Physiology (15-25%)
,Rationale: Immunology and Physiology carries the largest weight at 15-25% of
the SBB examination. This reflects the advanced level of the SBB exam, which
requires in-depth knowledge of immune response, immunoglobulins, antigen-
antibody interactions, complement, hemostasis, HDFN, cytopenias, and
transplantation. Serologic and Molecular Testing accounts for 20-25%, making it
the second largest domain.
QUESTION 3
What is the minimum passing scaled score for the SBB(ASCP) certification
examination?
A) 300
B) 350
C) 400
D) 500
Answer: C) 400
Rationale: The minimum passing score for the SBB(ASCP) certification
examination is 400 on a scaled score range of 100 to 999. The scaled score is a
statistical transformation of the candidate's ability estimate, adjusted for the
difficulty of the questions answered—it is not a percentage correct. There is no
fixed number of correct answers required to pass. The pass point is determined
through standard setting procedures by the ASCP BOC.
QUESTION 4
The SBB(ASCP) certification must be renewed every:
A) 1 year
B) 2 years
C) 3 years
D) 5 years
Answer: C) 3 years
Rationale: SBB(ASCP) certification must be renewed every 3 years through the
ASCP BOC Credential Maintenance Program (CMP). Renewal requires
,completing continuing education credits and paying the applicable renewal fee.
The credential can be maintained through various activities, including continuing
education, publication, teaching, and other professional development activities
approved by the ASCP BOC.
QUESTION 5
A 28-year-old female donor presents for plateletpheresis. Her hemoglobin is 12.8
g/dL, platelet count is 185 × 10⁹/L, and she reports taking 81 mg of aspirin daily
for migraine prophylaxis. She had a tattoo placed 10 months ago in a state-
regulated facility. Which of the following is the MOST appropriate action?
A) Defer the donor for low platelet count
B) Defer the donor for 48 hours due to aspirin use
C) Accept the donor for plateletpheresis
D) Defer the donor for 12 months due to tattoo
Answer: C) Accept the donor for plateletpheresis
Rationale: This donor meets all requirements for plateletpheresis. The minimum
platelet count for apheresis donation is 150 × 10⁹/L, and her hemoglobin is above
12.5 g/dL. While aspirin use requires a 48-hour deferral for plateletpheresis,
AABB standards allow plateletpheresis after a 48-hour deferral from the last dose.
Tattoos obtained in regulated facilities with sterile techniques typically require no
deferral or a 3-month deferral depending on jurisdiction; 10 months exceeds any
requirement.
QUESTION 6
A unit of apheresis platelets is collected and stored at 22°C with continuous
agitation. On Day 5 of storage, the pH is measured at 6.1. Which of the following
is the MOST appropriate action?
A) Issue the unit for transfusion
B) Discard the unit
C) Re-test the pH in 2 hours
D) Re-label the unit for pediatric use
Answer: B) Discard the unit
, Rationale: Platelets stored at 20-24°C with continuous agitation must have a pH
of ≥ 6.2 at the end of storage. A pH of 6.1 is below the acceptable limit and
indicates metabolic failure (excessive lactate production from glycolysis). Such
units should be discarded because they may have reduced in vivo survival and
increased risk of bacterial growth. The pH should be measured on Day 5 of storage
as part of quality control.
QUESTION 7
Which of the following is a permanent donor deferral criterion?
A) Recent travel to a malaria-endemic region
B) History of hepatitis C infection
C) Low hemoglobin on screening
D) Use of aspirin within 48 hours
Answer: B) History of hepatitis C infection
Rationale: A documented history of hepatitis C infection permanently
disqualifies a donor. Travel to malaria-endemic regions, low hemoglobin, and
aspirin use are temporary or reversible deferrals. Other permanent deferral
criteria include a history of hepatitis B, HIV infection, Creutzfeldt-Jakob disease
(CJD), and certain risk factors for variant CJD.
QUESTION 8
The most common cause of a vasovagal reaction during apheresis donation is:
A) Citrate toxicity
B) Needle phobia
C) Hypovolemia from large volume removal
D) Hyperventilation
Answer: C) Hypovolemia from large volume removal
Rationale: Rapid removal of plasma or platelets during apheresis can lead
to transient hypovolemia, triggering a vasovagal response. Symptoms include
lightheadedness, nausea, diaphoresis, and bradycardia. Citrate toxicity causes
Latest Comprehensive Study Guide with Practice Questions,
Transfusion Medicine Review, Verified Answers, Detailed
Rationales, Success Workbook
QUESTION 1
The ASCP Board of Certification (BOC) Specialist in Blood Banking (SBB)
examination contains how many multiple-choice questions, and how much time is
allotted?
A) 100 questions, 2 hours
B) 100 questions, 2 hours 30 minutes
C) 150 questions, 3 hours
D) 200 questions, 3 hours 30 minutes
Answer: B) 100 questions, 2 hours 30 minutes
Rationale: The SBB(ASCP) certification examination is composed of 100
multiple-choice questions given in a 2 hour 30 minute time frame. The exam is
administered using computer adaptive testing (CAT) format, where each
examinee receives a unique set of questions tailored to their ability level. Questions
cannot be skipped or revisited. Results are reported on a scaled score of 100 to 999,
with a minimum passing score of 400.
QUESTION 2
According to the ASCP BOC Content Guideline, which content area carries the
largest percentage weight on the SBB examination?
A) Blood Products (10-15%)
B) Serologic and Molecular Testing (20-25%)
C) Immunology and Physiology (15-25%)
D) Transfusion Practice (15-20%)
Answer: C) Immunology and Physiology (15-25%)
,Rationale: Immunology and Physiology carries the largest weight at 15-25% of
the SBB examination. This reflects the advanced level of the SBB exam, which
requires in-depth knowledge of immune response, immunoglobulins, antigen-
antibody interactions, complement, hemostasis, HDFN, cytopenias, and
transplantation. Serologic and Molecular Testing accounts for 20-25%, making it
the second largest domain.
QUESTION 3
What is the minimum passing scaled score for the SBB(ASCP) certification
examination?
A) 300
B) 350
C) 400
D) 500
Answer: C) 400
Rationale: The minimum passing score for the SBB(ASCP) certification
examination is 400 on a scaled score range of 100 to 999. The scaled score is a
statistical transformation of the candidate's ability estimate, adjusted for the
difficulty of the questions answered—it is not a percentage correct. There is no
fixed number of correct answers required to pass. The pass point is determined
through standard setting procedures by the ASCP BOC.
QUESTION 4
The SBB(ASCP) certification must be renewed every:
A) 1 year
B) 2 years
C) 3 years
D) 5 years
Answer: C) 3 years
Rationale: SBB(ASCP) certification must be renewed every 3 years through the
ASCP BOC Credential Maintenance Program (CMP). Renewal requires
,completing continuing education credits and paying the applicable renewal fee.
The credential can be maintained through various activities, including continuing
education, publication, teaching, and other professional development activities
approved by the ASCP BOC.
QUESTION 5
A 28-year-old female donor presents for plateletpheresis. Her hemoglobin is 12.8
g/dL, platelet count is 185 × 10⁹/L, and she reports taking 81 mg of aspirin daily
for migraine prophylaxis. She had a tattoo placed 10 months ago in a state-
regulated facility. Which of the following is the MOST appropriate action?
A) Defer the donor for low platelet count
B) Defer the donor for 48 hours due to aspirin use
C) Accept the donor for plateletpheresis
D) Defer the donor for 12 months due to tattoo
Answer: C) Accept the donor for plateletpheresis
Rationale: This donor meets all requirements for plateletpheresis. The minimum
platelet count for apheresis donation is 150 × 10⁹/L, and her hemoglobin is above
12.5 g/dL. While aspirin use requires a 48-hour deferral for plateletpheresis,
AABB standards allow plateletpheresis after a 48-hour deferral from the last dose.
Tattoos obtained in regulated facilities with sterile techniques typically require no
deferral or a 3-month deferral depending on jurisdiction; 10 months exceeds any
requirement.
QUESTION 6
A unit of apheresis platelets is collected and stored at 22°C with continuous
agitation. On Day 5 of storage, the pH is measured at 6.1. Which of the following
is the MOST appropriate action?
A) Issue the unit for transfusion
B) Discard the unit
C) Re-test the pH in 2 hours
D) Re-label the unit for pediatric use
Answer: B) Discard the unit
, Rationale: Platelets stored at 20-24°C with continuous agitation must have a pH
of ≥ 6.2 at the end of storage. A pH of 6.1 is below the acceptable limit and
indicates metabolic failure (excessive lactate production from glycolysis). Such
units should be discarded because they may have reduced in vivo survival and
increased risk of bacterial growth. The pH should be measured on Day 5 of storage
as part of quality control.
QUESTION 7
Which of the following is a permanent donor deferral criterion?
A) Recent travel to a malaria-endemic region
B) History of hepatitis C infection
C) Low hemoglobin on screening
D) Use of aspirin within 48 hours
Answer: B) History of hepatitis C infection
Rationale: A documented history of hepatitis C infection permanently
disqualifies a donor. Travel to malaria-endemic regions, low hemoglobin, and
aspirin use are temporary or reversible deferrals. Other permanent deferral
criteria include a history of hepatitis B, HIV infection, Creutzfeldt-Jakob disease
(CJD), and certain risk factors for variant CJD.
QUESTION 8
The most common cause of a vasovagal reaction during apheresis donation is:
A) Citrate toxicity
B) Needle phobia
C) Hypovolemia from large volume removal
D) Hyperventilation
Answer: C) Hypovolemia from large volume removal
Rationale: Rapid removal of plasma or platelets during apheresis can lead
to transient hypovolemia, triggering a vasovagal response. Symptoms include
lightheadedness, nausea, diaphoresis, and bradycardia. Citrate toxicity causes
