Related Experiment Video
Updated: Feb 7, 2026

Learning Modern Laryngeal Surgery in a Dissection Laboratory
Published on: March 18, 2020
When to re-order laboratory tests? Learning laboratory test shelf-life
Gal Levy-Fix1, Sharon Lipsky Gorman1, Jorge L Sepulveda2
1Department of Biomedical Informatics, Columbia University, 622 W. 168th Street, New York, NY, USA.
Abstract:
Most laboratory results are valid for only a certain time period (laboratory tests shelf-life), after which they are outdated and the test needs to be re-administered. Currently, laboratory test shelf-lives are not centrally available anywhere but the implicit knowledge of doctors. In this work we propose an automated method to learn laboratory test-specific shelf-life by identifying prevalent laboratory test order patterns in electronic health records. The resulting shelf-lives performed well in the evaluation of internal validity, clinical interpretability, and external validity.
More Related Videos
Related Concept Videos
Serum Laboratory Studies, Stool Test, Breath Test
Half-life of a Reaction
Characteristics of Life
The Angiosperm Life Cycle
The Tree of Life - Bacteria, Archaea, Eukaryotes
Functions of Life
Metabolism
The basic function of an organism is to consume energy and molecules in foods, convert some of it into fuel for movement, sustain body functions, and build and maintain body structures. There are two types of reactions that accomplish this: anabolism and catabolism.
Anabolism is the process whereby...

