Efficiency in Different Concentrations of Lactic acid Compared to 10% Formalin as a Preservative in Forensic Autopsy

Abstract

The objectives of this research are: 1) to compare the efficiency in different concentration of lactic acid and 10% formalin as a preservative in forensic autopsy and 2) to compare the efficiency between liver and kidney in forensic autopsy. This research was implemented in the form of posttest-only control group design and the simple random sampling by the lottery method was used to select 30 cases. In the data collection, the tissue autopsy of livers and kidneys was collected and prepared by using tissue processing method and Hematoxylin and Eosin Staining technique. Then the data were analyzed in descriptive statistics, i.e. frequency, percentage, means, standard deviation; and in inferential statistics, i.e. t-test independent, one-way ANOVA and the Scheffe’s Post Hoc Comparison. The results of this research are as follows 1) Different types of solutions had a different efficiency of tissue autopsy at the significance level of 0.01. Lactic acid with 0.2% concentration and 10% formalin had the most efficiency of the tissue autopsy at the mean of 4.00, followed by lactic acid with 0.4% concentration at 3.97, lactic acid with 0.3% concentration at 3.92 and lactic acid with 0.1% concentration at 3.67, respectively. In the comparison of economic efficiency, lactic acid with 0.2% concentration was cheaper than 10% formalin and lactic acid is nontoxic to the respiratory system and carcinogen to human. 2) Regarding the efficiency between liver and kidney in forensic autopsy, lactic acid with different concentrations and 10% formalin were found different at the significance level of 0.01. Accordingly, the kidney in forensic autopsy was efficiency maintained at the mean of 3.95, whereas the liver in forensic autopsy was efficiency maintained at the mean of 3.87.