CTBS Exam Prep (New 2026/ 2027 Update)
Questions & Answers {Grade A} 100%
Correct (Verified Solutions)
The angel of the dermatome blade to the skin surface during skin recovery is
a. 45 degrees
b. 30 degrees
c. 60 degrees
d. 15 degrees - Correct answer a. 45 degrees
If skin storage media is not changed, processing shall be initiated within how many
hours of recovery?
a. 24hrs
b. 72hrs
c. 48hrs
d. 96hrs - Correct answer d. 96hrs
According to the Karl Fisher analysis, lyophilized allograft tissue may not have a
residual moisture exceeding.
,a. 5%
b. 6%
c. 8%
d. 7% - Correct answer b. 6%
Cryoprotectant is absorbed by tissue cells thru the process of:
a. Infusion
b. Osmosis
c. Diffusion
d. Perforation - Correct answer b. Osmosis
Cryoprotectants are used for all of the following except:
a. To prevent cell shrinkage
b. To prevent intercellular ice formation
c. To prevent extracellular ice formation
d. To minimize osmotic imbalances - Correct answer c. To prevent extracellular ice
formation
,AATB standards require that tissue processing be preformed by:
a. CTBS technicians
b. Staff member with a medical background
c. Staff member with sufficient background, experienced and training
d. Staff member with 2-4 yr degree - Correct answer c. Staff member with sufficient
background, experienced and training
Which of the following is used for quality control of gamma irradiation?
a. Bacillis subtilis spore strips
b. Bacillis pumilus spore strips
c. Bacillis cereus spore strips
d. Chemical indicator sport strips - Correct answer b. Bacillis pumilus spore strips
Donors with a history of exposure to or ingestion of toxic substances should be:
a. Deferred as a tissue donor
b. Accepted as a tissue donor depending on the ID of the substance
c. Considered as suitable if the tissue bank specialist adheres to universal precautions
, d. Evaluated by the medical director for transplant suitability - Correct answer d.
Evaluated by the medical director for transplant suitability
A donor has systemic lupus, according to AATB standards, which of the following
tissues must be deferred?
a. Femoral Artery
b. Achilles Tendon
c. Heart Valves
d. Skin - Correct answer d. Skin
The 2 heart valves most often used in cardiac surgery are the
a. Mitral, Tricuspid
b. Ventricle, Atrium
c. Pulmonary, Aortic
d. Bicuspid, Mitral - Correct answer c. Pulmonary, Aortic
AATB requirements for serological testing include all of the following except
a. HBsAg
Questions & Answers {Grade A} 100%
Correct (Verified Solutions)
The angel of the dermatome blade to the skin surface during skin recovery is
a. 45 degrees
b. 30 degrees
c. 60 degrees
d. 15 degrees - Correct answer a. 45 degrees
If skin storage media is not changed, processing shall be initiated within how many
hours of recovery?
a. 24hrs
b. 72hrs
c. 48hrs
d. 96hrs - Correct answer d. 96hrs
According to the Karl Fisher analysis, lyophilized allograft tissue may not have a
residual moisture exceeding.
,a. 5%
b. 6%
c. 8%
d. 7% - Correct answer b. 6%
Cryoprotectant is absorbed by tissue cells thru the process of:
a. Infusion
b. Osmosis
c. Diffusion
d. Perforation - Correct answer b. Osmosis
Cryoprotectants are used for all of the following except:
a. To prevent cell shrinkage
b. To prevent intercellular ice formation
c. To prevent extracellular ice formation
d. To minimize osmotic imbalances - Correct answer c. To prevent extracellular ice
formation
,AATB standards require that tissue processing be preformed by:
a. CTBS technicians
b. Staff member with a medical background
c. Staff member with sufficient background, experienced and training
d. Staff member with 2-4 yr degree - Correct answer c. Staff member with sufficient
background, experienced and training
Which of the following is used for quality control of gamma irradiation?
a. Bacillis subtilis spore strips
b. Bacillis pumilus spore strips
c. Bacillis cereus spore strips
d. Chemical indicator sport strips - Correct answer b. Bacillis pumilus spore strips
Donors with a history of exposure to or ingestion of toxic substances should be:
a. Deferred as a tissue donor
b. Accepted as a tissue donor depending on the ID of the substance
c. Considered as suitable if the tissue bank specialist adheres to universal precautions
, d. Evaluated by the medical director for transplant suitability - Correct answer d.
Evaluated by the medical director for transplant suitability
A donor has systemic lupus, according to AATB standards, which of the following
tissues must be deferred?
a. Femoral Artery
b. Achilles Tendon
c. Heart Valves
d. Skin - Correct answer d. Skin
The 2 heart valves most often used in cardiac surgery are the
a. Mitral, Tricuspid
b. Ventricle, Atrium
c. Pulmonary, Aortic
d. Bicuspid, Mitral - Correct answer c. Pulmonary, Aortic
AATB requirements for serological testing include all of the following except
a. HBsAg
