CTBS EXAM PREP FINAL STUDY GUIDE 2026
TESTED QUESTIONS ANSWERS
◉ stewardship of the gift (MMA) Answer: 1. maximize quality of
donor
2. minimize infection potential
3. avoid unnecessary tissue discard
◉ can you wear street clothes under scrubs? Answer: no
◉ Criteria for determining suitability of recovery site Answer: 1.
adequate floor and tabletop space
2. zoning and recovery sequencing ( contamination control method
to make sure each zone is recovered and wrapped separately from
other to make sure there is no x-contam of bio burden from one zone
to another.
3. lighting
4. plumbing and draining
4. controlled closed air flow (no access to outside, no windows, ac,
fan etc)
5. all vents appear clean
6. no vented airflow directed onto sterile field
,◉ T/F: Handwashing can be substituted for use of approved
waterless scrub option Answer: true
◉ when do cultures to monitor bio burden occur Answer: post
recovery
- before processing begins
post processing
- before final packaging
◉ T/F: freezer quarantine kills all bio burden present during
recovery Answer: false
◉ what bio burden can survive the freezer quarantine (MYEC)
Answer: mold, yeast, e. coli and clostridium
◉ 5 major sources of contamination Answer: 1. air
2. hair - cover our hair and shave donor
3. skin - cover our skin and leave only recover areas of donor are
exposed
4. orifices - cover mouth/nose
5. fomites - dust particles.
, ◉ 3 things surgical scrub removes Answer: 1. dirt from hands and
arms
2/ oils from skin
3. bacteria from skin, under fingernails and cuticles.
◉ initial kill Answer: kills bacteria on contact
◉ residual kill Answer: soap on the skin keeps killing bacteria
◉ appropriate detergent for surgical scrub Answer: CHG, iodine,
PCMX
◉ steps for hand scrub Answer: 1. wash hands thoroughly
2. using a nail pick, clean under fingernails and cuticles
3. wash all surfaces of one hand up tp 2 inches above elbow
4. repeat for other side
5. rinse all detergent off
6/ keep hands above elbow
7/ dry with sterile towel
◉ how long should a surgical scrub last Answer: 5 min
TESTED QUESTIONS ANSWERS
◉ stewardship of the gift (MMA) Answer: 1. maximize quality of
donor
2. minimize infection potential
3. avoid unnecessary tissue discard
◉ can you wear street clothes under scrubs? Answer: no
◉ Criteria for determining suitability of recovery site Answer: 1.
adequate floor and tabletop space
2. zoning and recovery sequencing ( contamination control method
to make sure each zone is recovered and wrapped separately from
other to make sure there is no x-contam of bio burden from one zone
to another.
3. lighting
4. plumbing and draining
4. controlled closed air flow (no access to outside, no windows, ac,
fan etc)
5. all vents appear clean
6. no vented airflow directed onto sterile field
,◉ T/F: Handwashing can be substituted for use of approved
waterless scrub option Answer: true
◉ when do cultures to monitor bio burden occur Answer: post
recovery
- before processing begins
post processing
- before final packaging
◉ T/F: freezer quarantine kills all bio burden present during
recovery Answer: false
◉ what bio burden can survive the freezer quarantine (MYEC)
Answer: mold, yeast, e. coli and clostridium
◉ 5 major sources of contamination Answer: 1. air
2. hair - cover our hair and shave donor
3. skin - cover our skin and leave only recover areas of donor are
exposed
4. orifices - cover mouth/nose
5. fomites - dust particles.
, ◉ 3 things surgical scrub removes Answer: 1. dirt from hands and
arms
2/ oils from skin
3. bacteria from skin, under fingernails and cuticles.
◉ initial kill Answer: kills bacteria on contact
◉ residual kill Answer: soap on the skin keeps killing bacteria
◉ appropriate detergent for surgical scrub Answer: CHG, iodine,
PCMX
◉ steps for hand scrub Answer: 1. wash hands thoroughly
2. using a nail pick, clean under fingernails and cuticles
3. wash all surfaces of one hand up tp 2 inches above elbow
4. repeat for other side
5. rinse all detergent off
6/ keep hands above elbow
7/ dry with sterile towel
◉ how long should a surgical scrub last Answer: 5 min
