Abstract:

Objective: To analyze the blood ethanol content of samples sent to the center from 2015 to 2016 in order to provide the basis for the future analysis. Methods: The ethanol content in the blood was detected by headspace-gas chromatography（GC / MS）according to the technical specifications of Judicial Expertise GA/T 1073-2013. Results: The compositions of samples from these two years were compared and it had statistical significance（P<0.05）. The ratio of whole blood samples increased from 27.5% to 38.9%; the results of blood ethanol detection had statistical significance（P<0.05）. The ratio of samples without ethanol decreased from 53.2% to 25.8%; the ratio of samples with ethanol content greater than 80 mg/100 mL increased from 43.7% to 69.4%. Comparison between parallel samples and review samples did not show significant differences（P>0.05）. Conclusion: Standardization of blood sample collection is necessary: parallel samples of whole blood need to be collected and sent for detection timely under any circumstances in order to provide accurate results of blood alcohol concentration detection for the judicial process.

Key words: human blood, alcohol concentration detection, store, influencing factors