Variación biológica. Revisión desde una perspectiva práctica

The methodology to estimate the components of biological variation is summarised and a database, which is updated every two years and available to professionals of the area, is explained in detail. Daily application of data derived from biological variation in daily practice in internal and external quality control, as well as, in the detection of analytical and non-analytical errors is clearly explained. Last, but not least, examples are given on how to notify to clinicians on possible changes in patients health status.