Metabolite marker combination and method for deducing blood mark retention time within 24 hours

• Main Authors: LI JUNLI, JI ZHIMIN, HUO YUMEI, LI WANTING, GAO NIU, CHENG FENG, YAN JIANGWEI, HU WENJING
• Format: Patent
• Language: Chinese; English
• Published: 18.07.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention belongs to the field of forensic medicine detection, and particularly relates to a metabolite marker combination and a method for deducing blood mark retention time within 24h. By detecting tetrahydroaldosterone-3-glucuronide, phosphatidylserine and limonene-1, 2-epoxide in blood marks, the blood mark retention time within 24h can be deduced, and the blood mark retention time within 24h can be deduced. The relative expression quantity of the ganglioside and the 2-[(4-oxo-3-phenyl-4H-chrome-7-yl) oxygen] propionic acid is used for speculating the blood mark remaining time. According to the inference method provided by the invention, the detection of the bloodstain sample is slightly influenced by the environment, the stability is high, and the result error is smaller; the blood mark leaving time is deduced through an AdaBoost model according to the relative expression quantity of metabolite markers by using the metabolite with the rhythm change of 24 hours, and the in-vitro time of the blood mark