Published Paper Details:

Blood is the key evidence in most of the crime scenes which help in establishing the link between the offender and crime scene. For the accurate analysis of suspected blood sample received from the crime scene require a proper collection, packaging and preservation. For the examination of blood, a multistage process is follows in forensic science laboratories. But before going for these steps, presumptive tests are used for preliminary identification of blood. Conventionally Kastle- Meyer and LMG (Leucomalachite Green) tests are used for forensic identification of blood. The aim of this study is to compare the sensitivity and specificity of both Kastle- Meyer and LMG (Leucomalachite Green) tests with accordance to the time of development of color reaction. For this purpose, both fresh and dried blood-stained samples were used to compare the rate of sensitivity of the tests. From this study it is concluded that the sensitivity and specificity of Kastle- Meyer test is more than the LMG (Leucomalachite Green) test for both fresh and dried blood samples. Kastle- Meyer test gives instant results for the blood within 5-20 sec as compare to LMG (Leucomalachite Green) test. Absence of any significant difference between the fresh and dried blood samples for the development of color reaction.