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Quality Control Exam Questions with 100% Verified Answers
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Quality Control Exam Questions with 100% Verified Answers
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Quality Control Exam Questions with100% Verified Answers
QUALITY ASSURANCE - ✔ ✔ Sum of all activities which ensure correct results.
QUALITY CONTROL - ✔ ✔ Is a process of ensuring that
analytical results are correct by testing known samples that
resemble patients' samples.
accuracy and precision - ✔ ✔ Is a system of ensuring _______ and ________ in the
laboratory by including quality control reagents in every series
of measurements.
* SENSITIVITY
* SPECIFICITY
* ACCURACY
* PRECISION OR REPRODUCIBILITY
* PRACTICABILITY
* RELIABILITY
* DIAGNOSTIC SENSITIVITY
* DIAGNOSTIC SPECIFICITY - ✔ ✔ parameters of qc (8)
SENSITIVITY - ✔ ✔ Is the ability of an analytical method to measure
the smallest concentration of the analyte of interest.
,SPECIFICITY - ✔ ✔ Is the ability of an analytical method to measure
only the analyte of interest.
ACCURACY - ✔ ✔ Is the nearness or closeness of the assayed value to the
true or target value.
PRECISION OR REPRODUCIBILITY - ✔ ✔ is the ability of an analytical method to
give repeated results on the same sample that agree with one another.
Repeated analysis study - ✔ ✔ Accuracy is determine by what study (1)
Recovery study
interference study
comparison of methods study - ✔ ✔ Precision is determined by what study (3)
PRACTICABILITY - ✔ ✔ Is the degree by which a method is easily
repeated
RELIABILITY - ✔ ✔ ability of an analytical method to maintain accuracy
and precision over an extended period of time during which equipment,
reagents and personnel may change.
, DIAGNOSTIC SENSITIVITY - ✔ ✔ ability of an analytical method to detect
the proportion of individuals with the disease. It indicates the ability of the test
to generate more true-positive results and few false negative results.
DIAGNOSTIC SPECIFICITY - ✔ ✔ ability of the analytical method to detect
the proportion of
individuals without the disease. It reflects the
ability of the method to detect true negative
with very few false-positives.
INTRALAB QC (internal qc) - ✔ ✔ It involves the analyses
of control samples together with the patient specimens.
INTRALAB QC (internal qc) - ✔ ✔ It detects changes
in performance between present operation and the
"stable"
operation.
INTERLAB QC (external qc) - ✔ ✔ It involves proficiency testing
programs that periodically
provide samples of unknown
concentrations to
participating clinical
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