What are pre analytical and post-analytical factors?

The two areas of highest priority are patient/sample identification (pre-analytical quality) and the handling of critical results (post-analytical quality).

What are the 3 phases of laboratory testing?

Total testing process in the laboratory is a cyclical process divided into three phases: preanalytical, analytical and postanalytical.

What is the preanalytical phase of laboratory procedures?

Preanalytical Phase. The preanalytical phase is the phase where the laboratory has no direct control on the process. Preanalytical factors that can affect results include: sample type, sampling time, sample handling, patient’s preparation and the nutritional status of the patient.

What is the post-analytical phase?

The post-analytical phase is the final phase of the total testing process and involves evaluation of laboratory test results; release of test results in a timely manner to appropriate individuals, particularly critical results; and modification, annotation or revocation of results as necessary to support clinical …

What are post analytical factors?

Postanalytical variables occur after a test result is generated. In general, suchpostanalytical errors occur with entry, manipulation, and reporting of test data. If results are written by hand or entered via keyboard, then an entry error may occur.

What are preanalytical variables?

Under the broad umbrella of the preanalytical phase can be included specimen collection, handling and processing variables, physiological variables such as the effect of lifestyle, age, gender, pregnancy and menstruation and endogenous variables such as drugs and circulating antibodies.

What is analytical laboratory?

Analytical laboratory means a facility for the biological, microbiological, chemical, physical and radiochemical examination of potable water, non-potable water, or other environmental matrices.

What does preanalytical mean?

preanalytical (not comparable) Describing any procedure that takes place before an analysis. Describing any variable whose value can affect the outcome of a subsequent analysis.

What are the analytical phases?

The analytical phase involves the actual performance of the laboratory test, i.e. the measurement of the analyte, the validation of the result and the release of the result for review.

What are post-analytical factors?

What are the two phases involved in post-analytical analysis?

The analytical phase involves the actual running of the test, while the post-analytical phase includes recording the results, interpreting the results, reporting the results to the ordering physician, and filing the report.

What are the post-analytical errors?

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 the difference between pre-and post-analytical activities?

The pre-analytical definitions are very similar but there are some differences in the post-analytical areas, with ISO 15189:2007 including “authorization for release” and “storage of samples” as post-analytical activities.

What is the difference between pre-pre and post-analytical phase?

Some authors have introduced the “pre-pre-” and “post-post-” analytical phases to identify activities associated with the initial selection of tests and with the interpretation by clinicians respectively, to differentiate them for the pure collection/transport activities (pre-analytical phase) and reporting (post-analytical phase) [3, 4].

What is the pre-analytic phase of testing?

The pre-analytic testing phase occurs first in the laboratory process. This phase may include specimen handling issues that occur even prior to the time the specimen is received in the laboratory. Important errors can occur during the pre-analytic phase with specimen handling and identification.

What are the advantages of pre-analytical testing?

In the pre-analytical area, laboratories can develop clear sample acceptance and rejection criteria which are linked to monitoring of the collection and transport processes.