Preanalüütilised

Preanalüütilised refers to the phase in a laboratory workflow that occurs before the actual analysis of a sample takes place. This encompasses all the steps from the initial ordering of a test to the moment the sample is ready for examination by analytical instrumentation or a human observer. Key components of the preanalytical phase include patient identification, specimen collection, sample labeling, transportation, and initial processing steps such as centrifugation or aliquoting. Errors occurring during this phase can significantly impact the accuracy and reliability of the final test results, even if the analytical process itself is flawless. Therefore, meticulous attention to preanalytical procedures is crucial for ensuring diagnostic integrity. Standardized protocols and rigorous quality control measures are implemented to minimize preanalytical variability and maintain the highest standards of laboratory practice. The preanalytical phase is often considered the most error-prone stage in the entire testing process.