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In this work, the Interdisciplinary Expert Committee on Quality Specifications presents the specification values for 143 magnitudes, which places Spain as the country with the greatest number of measurements with a specification value. These values have been obtained from the results sent by the laboratories that are registered in the Intercomparison Programs of the 4 most representative Scientific Societies of the clinical laboratory. In addition, different comparative exercises are carried out, from which we can draw some conclusions: The specifications for the period 20112015 are stricter than those obtained in the period 2007-2010, in relation to the comparison with the strictest specification among the mandatory ones, in 68 % of the measurands, our specification has turned out to be similar or stricter, which indicates that our values are similar to the mandatory ones in terms of difficulty of compliance. Finally, from the result of the comparison with the data according to biological variability from the database of the European Federation of Clinical Chemistry and Laboratory Medicine, we found that in 41 %, our specification is stricter than the biological variability, in 49 % the opposite was true and in 10 % the value was similar. This heterogeneity observed between the consensus specifications and those obtained by biological variation is in line with the philosophy of the Milan Conference in 2014 where there is no strictly hierarchical relationship between the three levels of compliance with quality specifications.

Minimum analytical quality consensus specifications in Spain. Comparison with previous, mandatory and biological variability values