AUBF Online Prelim Pretest

A medical technologist failed to sanitize hands immediately after removing gloves and proceeded to prepare a reagent. Which component of Standard Precautions was violated?

• Gloves

• Hand hygiene

• Environmental control

• Respiratory hygiene/cough etiquette

A newly hired laboratory staff is unaware of the proper disposal method for a contaminated scalpel. Which safety principle must be reinforced?

• Standard Precautions

• Engineering controls

• Biohazard disposal

• Chain of infection

While reviewing a mislabeled urine specimen, the supervisor instructed the intern not to discard or relabel it. What principle guides this action?

• Preexamination variables

• Specimen integrity policy

• Procedure failure protocol

• Mislabeled specimen handling

A laboratory worker was exposed to Bacillus spores. Which hand hygiene practice is recommended?

• Use alcohol-based antiseptic

• Rinse with sterile saline

• Wash with soap and water

• Use antiseptic wipes

A supervisor discovers a specimen centrifuged in an uncapped tube. What major violation has occurred?

• Improper PPE usage

• Autoverification breach

• Aerosol transmission hazard

• Equipment maintenance error

A technologist wearing powdered latex gloves begins to experience facial flushing. What should be suspected?

• Contact dermatitis

• Bacterial contamination

• True latex allergy

• Improper hand hygiene

A patient specimen spilled on the lab bench. What should be used first to contain the spill?

• Sodium bicarbonate

• Paper towels with bleach

• Absorbent powder

• Alcohol-based cleanser

Which element of the chain of infection is interrupted when contaminated materials are sealed in biohazard containers?

• Reservoir

• Portal of exit

• Portal of entry

• Susceptible host

In a facility using urinalysis, how should unused reagent strips be handled?

• Refrigerate strips after opening

• Leave bottle cap open for easy access

• Protect from light and recap immediately

• Store in freezer

A clinical laboratory technologist reviews a report showing a shift in control values. What does this indicate?

• Gradual drift

• Immediate error

• Control instability

• Abrupt change in the mean