Serum Ethanol Concentrations in Relation to Sex and Age in Patients Admitted to a Large Emergency Department During 2015-2020.

We examined the number of patients tested for serum ethanol concentration (SEC) at admission to a large Emergency Department (ED) and the relationship of SEC with sex and age. SEC was analysed by enzymatic method. We retrieved SEC in patient samples from the ED during 2015-2020 from the laboratory information system. Altogether, 174 378 patients were admitted, and 7.3% were tested for SEC. Of these, 35.3% had a positive test. The percentage of patients tested increased from 4.8% in 2015 to 14.4% in 2020. A total of 416 patients had more than one positive SEC. For individual data, we included the first positive test per patient, n = 3607. Of these, 73% were men and 27% were women. The median SEC for both men and women was 1.9 g/L. About 4.4% had a SEC ≥ 3.5 g/L. The median SEC in patients aged 30-59 years was 0.2 g/L higher than the 12-29 and ≥ 60 age groups. In conclusion, the increase in the percentage of patients tested did not lead to a corresponding increase in ethanol-positive tests. There was a large predominance of men, the median SEC was the same for men and women and highest in the 30-59 age group.