Abstract
This study examined cocaine and benzoylecgonine concentrations in 100 consecutive deaths where either compound was identified in blood or urine specimens to determine whether any relationship between these concentrations and cause of death can be found. Forty-seven of the 100 cases were deaths attributed to cocaine, narcotic or combined cocaine and narcotic intoxication. There were 13 cases of cocaine intoxication where no psychoactive substance other than ethanol was detected. The mean cocaine concentration in these deaths was 908 ng/ml; three cases had cocaine concentrations greater than 2000 ng/ml, while the other ten cases had cocaine concentrations less than or equal to 700 ng/ml. The mean cocaine concentration in non-cocaine deaths where no psychoactive substance other than ethanol was detected was 146 ng/ml. This difference was not statistically significant. However, the average blood benzoylecgonine concentration in the 13 cocaine deaths was significantly higher than in the 19 non-cocaine deaths. A review of combined cocaine and narcotic deaths suggest that the narcotic is the main causative agent in these deaths.
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