question

Match the term with its definition:
Accuracy

answer

Agreement of results with the true value

question

Match the term with its definition:
Precision

answer

Reproducibility

question

Match the term with its definition:
Mean

answer

The average value in a set

question

Match the term with its definition:
Mode

answer

Most common value in a set

question

Match the term with its definition:
2SD

answer

95% Confidence Limits

question

Match the term with its definition:
CV

answer

(SD x 100)/Mean

question

Match the term with its definition:
Standard

answer

Substance whose exact concentrations are known

question

Match the term with its definition:
Control

answer

Substance having a known "range" of values

question

The mean for a particular control is 110 mg/dL. 1 SD = 5. What are the confidence limits for this control? (2SD)

answer

100-120

question

What is a delta check?

answer

Comparison of a patient's results with their previous test results.

question

What is the purpose for doing a delta check?

answer

Helps detect sampling labeling errors, testing errors, and erroneous patient results.

question

What is a systematic error?

answer

Errors in the test system that affect all samples on the run.

question

Give 2 examples of systemic error causes.

answer

Incorrect calibration, bad reagents, malfunctioning dilutors or pipettes

question

What is a random error?

answer

Mistakes that occur without prediction or regularity, but do NOT affect all samples on a run

question

How often can random errors be expected to occur?

answer

May occur as frequently as 1:20 analysis.

question

Give 2 examples of random error.

answer

Temperature fluctuations, mislabeled specimens, clerical errors, carelessness

question

What is a "trend"?

answer

Gradual increased or decreased movement of control values in 6 or more consecutive runs.

question

List 2 common causes of a "trend".

answer

Deterioration of reagents, standards, or instrument performance.

question

What is a "shift"?

answer

When control results fall on either side of the mean on 6 or more consecutive control runs.

question

List 2 common causes of a "shift".

answer

Introduction of something new into the procedure such as new lot of reagents or a sudden malfunction of the instrument.

question

What is the purpose of Westgard Rules?

answer

A combination of decision criteria, or control rules, to decide whether an analytical run is in-control or out-of-control

question

In regards to Westgard Rules, what does each of the following mean:

1-2S

answer

1 Control is >2 SD (but less than 3 SD); "warning" rule

question

In regards to Westgard Rules, what does each of the following mean:

1-3S

answer

1 control is >3 SD; Due to random or systemic error

question

In regards to Westgard Rules, what does each of the following mean:

2-2S

answer

2 or more controls are >2 SD on the same day of testing or one control is >2 SD on 2 consecutive runs. Suggests Systemic Error

question

In regards to Westgard Rules, can patient results be reported for the following Westgard Rule Errors:

1-2S

answer

Accept Run

question

In regards to Westgard Rules, can patient results be reported for the following Westgard Rule Errors:

1-3S

answer

Reject Run

question

In regards to Westgard Rules, can patient results be reported for the following Westgard Rule Errors:

2-2S

answer

Reject Run

question

Identify shifts, trends, and/or random errors in the following Levey-Jennings Chart below @ Day 10:
[image]

answer

Random Error

question

Identify shifts, trends, and/or random errors in the following Levey-Jennings Chart below @ Day 13-21:
[image]

answer

Shift

question

Identify shifts, trends, and/or random errors in the following Levey-Jennings Chart below @ Day 5-16:
[image]

answer

Downward Trend

question

Identify shifts, trends, and/or random errors in the following Levey-Jennings Chart below @ Day 18-27:
[image]

answer

Upward Trend

question

Identify the Westgard Rule in violation for this single control:
[image]

answer

2-2S

question

Identify the Westgard Rule in violation for this single control:
[image]

answer

1-3S

question

Looking at both controls each day, identify any Westgard Rule violations AND state whether the run can be accepted or must be rejected for Day 3:
Identify the Westgard Rule in violation for this single control:
[image]

answer

1-2S
Accept

question

Looking at both controls each day, identify any Westgard Rule violations AND state whether the run can be accepted or must be rejected for Day 9:
Identify the Westgard Rule in violation for this single control:
[image]

answer

1-2S
Accept

question

Looking at both controls each day, identify any Westgard Rule violations AND state whether the run can be accepted or must be rejected for Day 10:
Identify the Westgard Rule in violation for this single control:
[image]

answer

2-2S
Reject

question

Looking at both controls each day, identify any Westgard Rule violations AND state whether the run can be accepted or must be rejected for Day 20:
Identify the Westgard Rule in violation for this single control:
[image]

answer

1-2S
Accept

question

Looking at both controls each day, identify any Westgard Rule violations AND state whether the run can be accepted or must be rejected for Day 21:
Identify the Westgard Rule in violation for this single control:
[image]

answer

2-2S
Reject

question

Looking at both controls each day, identify any Westgard Rule violations AND state whether the run can be accepted or must be rejected for Day 6:
Identify the Westgard Rule in violation for this single control:
[image]

answer

1-3S
Reject

question

Looking at both controls each day, identify any Westgard Rule violations AND state whether the run can be accepted or must be rejected for Day 19:
Identify the Westgard Rule in violation for this single control:
[image]

answer

1-2S
Accept

question

Looking at both controls each day, identify any Westgard Rule violations AND state whether the run can be accepted or must be rejected for Day 20:
Identify the Westgard Rule in violation for this single control:
[image]

answer

2-2S
Reject

question

What does the MSDS stand for?

answer

Material Safety Data Sheet

question

Why is it important that the lab have a file of the MSDS?

answer

Precautions & Treatment following exposure

question

Label the Blue diamond in this National Fire Protection Agency Symbol:
[image]

answer

Health

question

Label the Red diamond in this National Fire Protection Agency Symbol:
[image]

answer

Flammability

question

Label the Yellow diamond in this National Fire Protection Agency Symbol:
[image]

answer

Reactivity/Instability

question

Label the White diamond in this National Fire Protection Agency Symbol:
[image]

answer

Special Hazards

question

With the National Fire Protection Agency Symbol, what does the number 0 represent?

answer

No Hazard

question

With the National Fire Protection Agency Symbol, what does the number 4 represent?

answer

High Hazard

question