Preanalytical Error
Laboratory errors occurring before sample analysis, affecting hormone test accuracy and interpretation.
Full Definition
Preanalytical errors encompass all mistakes that occur from test ordering through sample collection, handling, and processing before laboratory analysis begins. In hormone testing, these errors are particularly critical because many hormones are sensitive to timing, storage conditions, and collection methods. Common preanalytical errors include incorrect timing of collection (especially for cortisol or testosterone), improper storage temperature, hemolysis, and patient preparation failures. These errors can lead to clinically significant misinterpretation of results, making their prevention and recognition crucial for accurate hormonal assessment.
Usage
Usage note: Hyphenate as 'pre-analytical' when used as an adjective before a noun.
In Context
- "The elevated cortisol result was attributed to preanalytical error due to afternoon collection." — Quality assurance report
- "Preanalytical error rates can be reduced through standardized collection protocols." — Laboratory procedure manual