Indian Journal of Forensic Medicine & Toxicology, October-December 2020, Vol. 14, No. 4 4153 Post Mortem Organ Weight at Bhayangkara Pekanbaru Polda Riau Hospital, Indonesia Citra Manela 1 , Biomechy Oktomalio Putri 2 , Majesty Anita Imran 3 1 Forensic Departement, Faculty of Medicine, Andalas University, Padang 25163, Indonesia, 2 Histology Departement, Faculty of Medicine, Andalas University , Padang 25163, Indonesia, 3 Medical Faculty, Andalas University, Padang 25163, Indonesia Abstract Post mortem organ weight is one of indicator that serves as supporting evidence in determining the cause of death, because if there is a difference between the post mortem organ weight with normal organ weight indicates the occurrence of pathological conditions that may be related to the cause of death. The objective of this study was to determine post mortem organ weight in autopsy cases at Bhayangkara Pekanbaru Polda Riau Hospital in 2017-2018. This research is a retrospective descriptive study using secondary data. Data were obtained from autopsy data in the forensic section of Bhayangkara Pekanbaru Polda Riau Hospital in 2017-2018. Data were analyzed by using univariate analysis carried out on each variable of the research results. The results of this study were obtained from twenty one autopsy cases with a mean value of organ weight: the brain (1334.29 grams), liver (1130.90 grams), right lung (370.48 grams), left lung (311.24 grams) gram), heart (275.33 grams), left kidney (114.52 grams), right kidney (114.00 grams), and spleen (113.43 grams). Organs in men are heavier than women, except the liver. Organ weight has decreased in old age. People with short bodies tend to have lighter organ weights than people with tall bodies. The conclusion of this study is the average value of post mortem organ weight in this study is different from the weight value of organs found in forensic textbooks. Keywords: autopsy, post mortem, organ weight Introduction Autopsy is one of the important parts in medical science, because in addition to establish the fnal diagnosis, the function of autopsy also to fnd the relationship between the cause of death with abnormalities in the organs that cause death, and can explain the relationship between these. An autopsy is done in suspicious death case, death due to murder, and sudden death without apparent cause. 1 Autopsy consists of 2 types examination, external and internal examination. On internal examination, one Corresponding Author : Citra Manela Forensic Departement, Faculty of Medicine, Andalas University, Email : citramanela@med.unand.ac.id, manela_84@yahoo.com of the examinations is weighing post mortem organ weight. 2 It plays an important role as supporting evidence in determining the cause of death, because if there is a difference between the weight of a post mortem organ with the average weight of the post organ mortem is normal, it indicates a change in the organ caused by a pathological state in the organ that is likely related to the cause of the death. 3 Standard values of post mortem organ weights are needed to determine whether a person’s organs are normal or not, such as those found in forensic books and studies that have been conducted in other countries, like South Africa, India, Korea, Thailand, Iran. Research by Vadgama et al. in 2014 in Jamnagar region, India, stated that the standard weight of organs contained in forensic books written by authors from other countries is not appropriate if used in populations in India. 4 It shows that the standard weight of organs using samples in other