1.1.6 Basic Principles and Techniques (Quality Assurance: Lab testing process, QC) Flashcards
Quality Management, Quality Assurance, Quality Control
Is this the hierarchy of order?
T or F
T
Include test requisition, patient preparation, patient identification, specimen collection, labelling, specimen transport, specimen reception, handling, and preparation
a. Pre-analytical
b. Analytical
c. Post-analytical
a
More on Samples and patient related
One of the essential aspects in the Analytical phase?
Quality control (Controls)
Include reagents, preventive maintenance of equipment, calibration, analysis of samples, and QUALITY CONTROL
a. Pre-analytical
b. Analytical
c. Post-analytical
b
More focus on lab equipment and controls
Include verification of calculations and reference ranges, flagging and notification of panic/critical values, delta checks, and reporting of results
a. Pre-analytical
b. Analytical
c. Post-analytical
c
An algorithm in which a current laboratory result is compared with results obtained on a previous specimen from the same patient
Delta check
Delta checks detect _______ and ________ errors
Pre-analytical and analytical
Closeness of the result to the true or actual value
a. Reliability
b. Accuracy
c. Precision
b
Ability to produce a series of results that agree closely with each other
a. Reliability
b. Accuracy
c. Precision
c
Ability to maintain ACCURACY and PRECISION over an extended period of time during which equipment, reagents, and personnel may change
a. Reliability
b. Accuracy
c. Precision
a
Precision is also known as?
Repeatability or reproducibility
Commonly expressed in terms of coefficient of variation
a. Reliability
b. Accuracy
c. Precision
c
Repeatability means within-run precision
Reproduciblity means in between run or interlab precision
T or F
T
Repeatability indicates repeating series of same or almost same result with the same equipment
Reproducibility indicates regardless of personnel or equipment or places as long as it can reproduce the same result
Internal QC Involves the analysis at Least _____ of control every ________
2
24 hrs
In Internal QC, Initial control limits are established by analyqing control materials for at least ____ consecutive days or runs
20