MT 35 (LAB): Lab Safety

True or False: Infection control is a set of procedures to monitor and control infections in health care facilities.

True.

Identify the primary source of biological hazards in the laboratory.

Infectious agents.

Fill in the blank: The transmission of microorganisms requires a source, a mode of transmission, and a ________.

Susceptible host.

True or False: Hand contact is the most common mode of transmitting infections in the lab.

True.

Fill in the blank: Hand hygiene includes handwashing and ________.

Alcohol-based cleansers.

True or False: Alcohol-based cleansers are effective even when hands are visibly soiled.

False.

Identify the best way to break the chain of infection.

Handwashing.

True or False: Proper handwashing sterilizes the hands.

False.

Fill in the blank: Effective handwashing removes surface contaminants, infectious organisms, and ________.

Dead skin.

Identify the three elements of handwashing.

Running water, friction, antimicrobial soap.

True or False: The handwashing procedure lasts about 40–60 seconds.

True.

Fill in the blank: Hands should be rinsed in a ________ position to prevent recontamination.

Downward.

True or False: Faucets should be turned off using a clean paper towel.

True.

Identify the most commonly used disinfectant in laboratories.

10% Sodium hypochlorite.

True or False: Diluted bleach solutions should be prepared weekly.

True.

Fill in the blank: Bleach solutions should be stored in ________ containers.

Plastic.

True or False: Empty urine containers are classified as biologically hazardous waste.

False.

Identify the first step in responding to a biological spill.

Use absorbent powder or paper towels.

Fill in the blank: Absorbent material used for cleaning spills must be discarded in ________ containers.

Biohazard.

True or False: Spills should be mopped up immediately.

False.

Identify the correct container for disposing of sharps.

Red, puncture-resistant, leakproof container with biohazard symbol.

True or False: Sharps containers should be emptied only when they are full.

False.

Fill in the blank: Needle recapping should only be done using a ________ device.

Mechanical.

True or False: Accidental needle sticks must be reported to the supervisor.

True.

Identify a material classified as a chemical hazard.

Acids.

Fill in the blank: The first aid for skin or eye chemical exposure is flushing with water for at least ______ minutes.

15.

True or False: Attempting to neutralize a chemical on skin is recommended.

False.

Identify the neutralizer used for chemical spills.

Sodium bicarbonate.

Fill in the blank: Acid should always be added to ________.

Water.

True or False: Reagents should be prepared under a fume hood.

True.

Identify the organization responsible for radioactive waste in the Philippines.

Philippine Nuclear Research Institute.

Fill in the blank: Radiation exposure is affected by time, distance, and ________.

Shielding.

True or False: Radiation effects are cumulative.

True.

Identify the color code for chemical waste.

Yellow.

True or False: The NFPA 704-M system identifies hazards using numbers and colors.

True.

Fill in the blank: Electrical equipment must be grounded using ________ plugs.

Three-pronged.

True or False: You should immediately touch a person experiencing electric shock to help.

False.

Identify one nonconductive material used to move equipment after electric shock.

Wood.

True or False: You should turn off the circuit breaker in case of electric shock.

True.

Fill in the blank: Flammable chemicals must be stored in ________ cabinets.

Safety.

True or False: Compressed gas cylinders should be kept near heat sources.

False.

Identify what to use to smother flames on a person.

Fire blanket.

True or False: Laboratory fire drills must be held at least annually.

True.

Fill in the blank: Physical hazards include tripping, falling, and ________.

Lifting injuries.

Identify a general precaution against physical hazards.

Avoid running in hallways.

True or False: Long hair must be tied back in the laboratory.

True.

Fill in the blank: Closed-toed ________ must be worn in the lab.

Shoes.

True or False: Jewelry should be minimal or avoided during lab work.

True.

Identify the most sterile method of urine collection.

Suprapubic aspiration.

Fill in the blank: The ideal disinfectant should be bactericidal and not interfere with ________ tests.

Chemical.

True or False: There is no perfect urine preservative.

True.

Identify the best all-around urine preservative.

Toluene.

Fill in the blank: The OSHA standard for hazard communication includes ________.

Pictograms.

True or False: Hazard symbols must be visibly posted in the workplace.

True.

Identify the purpose of the red bag in laboratory waste management.

Infectious waste.

Fill in the blank: Yellow bag is used for ________ waste.

Chemical.

True or False: Biohazard symbols are mandatory for hazardous materials.

True.

Fill in the blank: Broken glassware contaminated with blood is classified as ________ hazard.

Biological.

Identify the correct action for a fire involving flammable liquids.

Use a Class B extinguisher.

True or False: All employees must participate in fire drills.

True.

Fill in the blank: Contact with electrical equipment should be avoided if your hands are ________.

Wet.

Identify the proper way to clean a minor blood spill.

Use paper towels and pour bleach over them.

True or False: Hazardous chemicals should be presumed safe unless labeled otherwise.

False.

Fill in the blank: Lab workers should avoid ________ when carrying hazardous materials.

Running.

True or False: Color-coded labels help identify the type of laboratory waste.

True.

Identify the acronym for the system that identifies fire, health, and reactivity hazards.

NFPA 704-M.

True or False: Radiation should be handled using protective shielding and monitoring exposure time.

True.

Fill in the blank: Biological waste should be placed in ________ containers labeled with a biohazard symbol.

Leakproof.

Identify the step that should follow a chemical spill on skin.

Flush with water and seek medical attention.

True or False: Sharps must be disposed of only when container is completely full.

False.

Fill in the blank: Sand or clay can be used to absorb ________ chemical spills.

Liquid.

Identify a hazard caused by broken thermometers or barometers.

Mercury exposure.

True or False: Electrical hazards can cause serious injury or death.

True.

Fill in the blank: Hands should be scrubbed for at least ________ seconds during handwashing.

20.

True or False: A sink can be used to rest arms during handwashing.

False.

Identify what is used when biohazard symbols are not available.

Red or yellow color coding.

Fill in the blank: Fire caused by electrical equipment requires a Class ________ extinguisher.

C.

True or False: Physical hazards can be prevented through good housekeeping.

True.

Identify the agency responsible for enforcing lab safety regulations.

OSHA.

Fill in the blank: Flammable liquids must be stored in ________-proof refrigerators.

Explosion.

True or False: Radiation exposure guidelines are based on the concept of ALARA (As Low As Reasonably Achievable).

True.

Identify the type of container used for storing bleach solutions.

Plastic bottle.

Fill in the blank: Bleach solutions are viable for ________ month(s) if protected from light.

1.

True or False: All work areas must be disinfected before and after procedures.

True.

Fill in the blank: A ________ hazard includes exposure to bacteria, viruses, or parasites.

Biological.

True or False: Paper towels used in cleaning spills must be discarded in regular trash.

False.

Identify the item used to disinfect work surfaces.

10% bleach.

Fill in the blank: If absorbent powder is used for a spill, it will ________ the fluid.

Solidify.

True or False: All chemical spills require neutralization on skin.

False.

Fill in the blank: All reagents should be handled in a well-ventilated area or ________.

Fume hood.

Identify the correct method to recap a needle.

Mechanical device.

True or False: Biohazard containers must be three-fourths full before disposal.

True.

Fill in the blank: Electrical cords should be ________ before inspection or repair.

Unplugged.

Identify a safety practice to prevent electric shock.

Dry hands before touching equipment.

True or False: All biological waste except urine must go into biohazard containers.

True.