What are analytical and post-analytical errors?
Pre-analytical errors include all errors that occur prior to analysis. Common post-analytical errors include failure to report test results, delay in reporting, incorrect calculation, critical results not reported or delayed, and results sent to the wrong patient.
What is a pre-analytical error?
Preanalytic errors are errors that occur prior to the testing process. Hemolyzed specimens, clotted specimens, incorrect tube type, and inadequate tube fill can all produce preanalytic errors.
What is a post-analytical error?
POST-ANALYTICAL ERROR. Traditionally, the laboratory community has viewed post-analytical errors as errors. that occur after the analysis is complete but within the confines of the 4 walls of the. laboratory itself and under the control of the laboratory.
What are the pre-analytical errors in laboratory?
The most commonly reported types of pre-analytical error are: a) missing sample and/or test request, b) wrong or missing identification, c) contamination from infusion route, d) haemolysed, clotted, and insufficient samples, e) inappropriate containers, f) inappropriate blood to anticoagulant ratio, and g) …
What does preanalytical mean?
Filters. Describing any variable whose value can affect the outcome of a subsequent analysis.
How can preanalytical errors be prevented?
“Other measures for avoiding preanalytical errors that have proven successful are: never accept an unlabelled sample. Never allow unlabelled or mislabeled samples to be relabeled, if recollection is feasible.” “Document relabeling must be approved by an attending physician, with results footnoted.
Which of the following would be a preanalytical error related to specimen transport?
Which of the following would be a preanalytical error related to specimen transport? Glycolysis by the cells in blood specimens can falsely lower glucose values at a rate of up to: 200 mg/L per hour.
What is the preanalytical phase of laboratory procedures?
Preanalytical phase comprises of test selection, patient identification, collection of the sample, handling of the sample, sorting out, pipetting and centrifugation (2, 3). Negligence in any of these steps can lead to erroneous results attributed to preanalytical phase.
What are preanalytical variables?
Preanalytical variables occur prior to specimen testing and may include variables involving the process of obtaining a specimen. Analytical variables occur during actual testing of the specimen.
How do you control post analytical errors?
1. Implement bar code identification system: avoid patient misidentification and specimen labeling errors. 2. Provide automatic transmission of reports by computer, pager or other electronic formats: allows transmission of results to relevant medical professionals.
When does pre-pre and post-post analytical errors occur?
“Pre-pre” and “post-post” analytical error: high-incidence patient safety hazards involving the clinical laboratory Data from recent studies suggest that the highest incidence of laboratory-related errors occurs in the pre-analytical phase of laboratory testing.
What is preanalytical analytical and post analytical phase?
The pre-analytic testing phase occurs first in the laboratory process. This phase includes what is usually considered the “actual” laboratory testing or the diagnostic procedures, processes, and products that ultimately provide results. The post-analytic phase is the final phase of the laboratory process.
What are the different types of preanalytical error?
The most commonly reported types of pre-analytical error are: a) missing sample and/or test request, b) wrong or missing identification, c) contamination from infusion route, d) haemolysed, clotted, and insufficient samples, e) inappropriate containers, f) inappropriate blood to anticoagulant ratio, and g) What are the phases of laboratory testing?
When do preanalytical variables occur in a test?
Preanalytical variables occur prior to specimen testing and may include variables involving the process of obtaining a specimen. Likewise, what is an analytical error? The two major causes of analytical errors are instrument malfunction and operator error.