Analysis of ethyl glucuronide and ethyl sulfate in blood to determine the absorption or elimination phase of alcohol for Korean

摘要

This study was conducted to understand alcohol kinetics for Koreans and to determine whether an individual is in absorption phase or elimination phase at the time of blood collection by analyzing of ethyl glucuronide and ethyl sulfate in blood. A total of 50 healthy adults was selected and assigned to drink 1 g of ethanol per kg body weight of individual within 1 h. Blood samples were then collected every 15 min for the first 3 h, 30 min next 3 h, and 1 h last 9 h. Urine samples were also collected from the individual, but not under the controlled environment. All samples were then analyzed by gas chromatography with a flame ionization detector (GC-FID) for alcohol and liquid chromatography-mass/mass spectrometry (LC-MS/MS) for EtG and EtS. The maximum BAC (Cmax) was 0.138% (g/100 mL) in average under the controlled experimental condition. Alcohol elimination rates (beta) in average were 0.020% for male and 0.024% for female, respectively. It was found that the ratio of UAC and BAC was less than 1 in the absorption phase and the average ratio of UAC and BAC was 1.47 in the elimination phase. The comparison of BAC (g/L) and EtG (mg/L) absorption and elimination curves showed that the intersection time was 3.9 h in average. It is shown that the ratio of EtG (mg/L)/BAC (g/L) is higher than 1, the individual would be in elimination phase of BAC. At the time of Cmax, the ratio of EtG (mg/L)/BAC (g/L) was 0.255 +/- 0.132 (SD) in average. (C) 2019 Elsevier B.V. All rights reserved.