Table 1. Characteristics of analysed datasets.

Analyte	Total number of results	Average daily number of results	Median (Q1-Q3) concentration	Minimum concentration	Maximum concentration
Creatinine	14,800	121	70 (63-80)	26	971
Potassium	7299	60	4.3 (4.1-4.6)	2.8	7.4
Sodium	6663	55	140 (139-141)	123	149
Albumin	2408	20	43 (41-44)	20	52
Q1-Q3 - interquartile ranges. Concentrations are expressed in μmol/L for creatinine, in mmol/L for potassium and sodium and in g/L for albumin.