Inclusion Criteria:  Admitted from 01 July 2017 to 31 December 2019 Patients who have had blood lactate, blood ketones and serum salicylates performed during this time period Patient who also had urea / creatinine and a comprehensive panel of electrolytes performed up to +/-12h of blood lactate, blood ketones and serum salicylates being performed  Exclusion Criteria:  Patient who did not have blood lactate, blood ketones and serum salicylates performed during this time period Patient who did not have urea / creatinine and a comprehensive panel of electrolytes performed up to +/-12h of blood lactate, blood ketones and serum salicylates being performed