CLS CLINICAL LAB SCIENCE BOARD
EXAMINATION TEST 2026
COMPREHENSIVE STUDY GUIDE AND
SOLUTIONS
◉ Fire classes
Answer: A- wood, paper, trash
B- liquids: grease, oil, gasoline
C- electrical equipment
D- combustible metals
◉ Standard precautions
Answer: Treat every sample as potentially infectious
Use whenever you may have contact with patient blood
Approach to infection control- includes patient isolation protocols
◉ HBV
Answer: Hepatitis b- most common blood borne disease in the US
◉ HCV
Answer: Most likely to become chronic
, ◉ HIV
Answer: Causes AIDS but not everyone who has HIV will develop
aids
◉ BSL-1
Answer: Materials not known to cause disease in healthy adults, only
PPE required
Ex: yeast, skin bacteria
◉ BSL-2
Answer: Associated with human disease; hazard is from injury,
ingestion, or mucosal membrane exposure
Ex: herpes, common cold
Patient specimen treated as bsl 2
◉ BSL-3
Answer: Potential for aerosol transmission with serious or lethal
consequences
Ex: tuberculosis, COVID
◉ BSL-4
EXAMINATION TEST 2026
COMPREHENSIVE STUDY GUIDE AND
SOLUTIONS
◉ Fire classes
Answer: A- wood, paper, trash
B- liquids: grease, oil, gasoline
C- electrical equipment
D- combustible metals
◉ Standard precautions
Answer: Treat every sample as potentially infectious
Use whenever you may have contact with patient blood
Approach to infection control- includes patient isolation protocols
◉ HBV
Answer: Hepatitis b- most common blood borne disease in the US
◉ HCV
Answer: Most likely to become chronic
, ◉ HIV
Answer: Causes AIDS but not everyone who has HIV will develop
aids
◉ BSL-1
Answer: Materials not known to cause disease in healthy adults, only
PPE required
Ex: yeast, skin bacteria
◉ BSL-2
Answer: Associated with human disease; hazard is from injury,
ingestion, or mucosal membrane exposure
Ex: herpes, common cold
Patient specimen treated as bsl 2
◉ BSL-3
Answer: Potential for aerosol transmission with serious or lethal
consequences
Ex: tuberculosis, COVID
◉ BSL-4
