LABCE LABORATORY OPERATIONS AND ANSWERS
Which of the following describes the westgard multi-rule r 4s?
A. 4 consecutive control data points are w/in +/- 1s
B. 4 consecutive control data points are outside +/- 2s
C. One data point is +2sd and a consecutive data point is -2sd
D. Two consecutive data points fall outside the mean four times - answers- c. One data
point is +2sd and a consecutive data point is -2sd
Difference b/w the highest & lowest result of a run exceeds 4sd
- day one control is at +2sd, on day two, same control is at -2sd, this rule detects
random error, run is rejected
Which of the following describes the quality standards that all labs must meet in order to
ensure testing accuracy, reliability, & timeliness no matter where a patient sample is
tested?
- safe medical devices act
- health insurance portability & accountability act
- clinical lab improvement amendments
- occupational safety & health administration - answers- - clinical lab improvement
amendments
Edta & sodium citrate combine w/ __ to inhibit coagulation in blood samples
On a proficiency test report (cap), the standard deviation index (sdi) is an indication of:
- position of your test results compared to the mean of the test group
- sd of the test group compared to your sd
- comparative sdi of the test group compared to your test mean
- sd of your test compared to the mean & sd of the test group - answers- position of
your test result compared to the mean of the test group
All of the following tests are affected by the pneumatic tube system transport, except?
- albumin
- potassium
- plasma hemoglobin
- acid phosphatase - answers- albumin
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