Module 4: Quality Control Flashcards

1
Q

4 purposes of quality control

A
  1. systematic monitoring
  2. detect analytical error
  3. prevent reporting of incorrect patient test results
  4. performance monitoring
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2
Q

a definitive procedure that produces a test result

A

analytical method

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3
Q

4 qualities of an analytical method

A

accurate
relevant
effective
reproducible

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4
Q

ability of a method to detect small quantities of an analyte

A

analytical sensitivity

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5
Q

ability of a method to detect only the analyte it is designed to determine

A

analytical specificity

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6
Q

5 qualities of a control material

A
  1. must be insufficient quantity
  2. must last at least a year
  3. aliquoted in stable form
  4. minimal variation between vials
  5. spans clinically important range
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7
Q

what is the stable form of a control material

A

lyophilized

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8
Q

two levels lf control material

A

L1 - normal control

L2- abnormal control

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9
Q

what values are compared in quality control

A

determined values

expected values

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10
Q

what is being tested in quality control

A

analytical methods

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11
Q

for highly precise assays, control materials must be analyzed for:

A

5 days

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12
Q

for less precise assays, control materials should be analyzed for

A

at least 20 days

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