FREE MLPAO Laboratory Equipment and Quality Questions and Answers

Question 1

A Levey-Jennings chart for a quality control material shows that the last seven consecutive results have fallen above the mean. According to Westgard rules, this pattern is best described as a:

Accepted Answer

Shift

Answer

Random error

Answer

Trend

Answer

Calibration error

Question 2

Which of the following is considered the most effective method for verifying that a steam autoclave cycle has successfully achieved sterilization?

Accepted Answer

Processing a biological indicator containing Geobacillus stearothermophilus spores

Answer

Placing a chemical indicator strip in the center of the load

Answer

Observing that the pressure and temperature gauges reached the required settings

Answer

Using heat-sensitive autoclave tape on the exterior of the packages

Question 3

The routine performance verification for a laboratory centrifuge must include checking which two critical parameters to ensure proper specimen separation and quality?

Accepted Answer

Rotational speed (RPM) and timer accuracy

Answer

Lid gasket integrity and internal temperature

Answer

Electrical safety and noise level

Answer

Rotor balance and vibration frequency

Question 4

An MLA performs a gravimetric check on a P1000 micropipette set to dispense 1000 µL. The average mass of ten dispenses of reagent water is 0.982 g, which converts to a volume of 982 µL. This finding indicates a primary problem with the pipette's:

Accepted Answer

Accuracy

Answer

Precision

Answer

Tip compatibility

Answer

Ergonomics

Question 5

A laboratory is setting up a highly sensitive trace element analysis. According to CLSI standards, what is the minimum grade of reagent water that should be used for preparing calibrators and standards for this procedure?

Accepted Answer

Clinical Laboratory Reagent Water (CLRW)

Answer

Type II

Answer

Type III

Answer

Special Reagent Water (SRW)

Question 6

An MLA/T checks the temperature log for a specimen refrigerator and finds the current temperature is 10°C. The acceptable range is 2°C to 8°C. What is the most appropriate immediate action?

Accepted Answer

Document the out-of-range temperature and immediately notify a supervisor or senior staff.

Answer

Adjust the refrigerator's thermostat down and re-check in 30 minutes.

Answer

Move all specimens to a backup refrigerator that is within range.

Answer

Wait for the next scheduled temperature check to see if it resolves itself.

A Levey-Jennings chart for a quality control material shows that the last seven consecutive results have fallen above the mean.According to Westgard rules, this pattern is best described as a:

A Levey-Jennings chart for a quality control material shows that the last seven consecutive results have fallen above the mean.
According to Westgard rules, this pattern is best described as a: