Kristal Hemoglobin Pada Bercak Darah yang Dipaparkan Sodium Hipoklorit (NaOCl) Menggunakan Tes Teichmann Dan Tes Takayama

Abstract

Bloodstains is an important body fluids as evidence, because the blood has hemoglobin structure consisting of heme
and polypeptides. Perpetrators will attempt to clean the bloodstain that found at the crime scene by using cleaning
agents and chemicals. Sodium hypochlorite is a chemical that found in cleaning fluids and bleach. This study aims to
know the effects of sodium hypochlorite to bloodstain and confirmatory test. Bloodstain on the objeck glasses and
the fabrics exposed by sodium hypochlorite concentration 5,25% and 0,15%, and examined with Teichmann’s test
and Takayama’s test, and seen under microscope. In this study, show no crystal hemoglobin of the bloodstain on the
objeck glasses and fabrics exposed by sodium hypochlorite concentration 5.25% and concentration 0,15%. This
might caused by sodium hypochlorite destructed structure of heme, so there were no reaction between heme, sodium
chloride and acetat glacial acids on Teichmann’s test and no reaction between heme and Takayama’s reagen on
Takayama’s test. The conclusions of this study, crystal hemoglobin were not found on bloodstain exposed by sodium
hypochloryte using Teichmann’s test and Takayama’s test.