Abstract
A simple, rapid and highly sensitive assay based on Enzyme Linked Immunosorbent Technique (ELISA) using human Haptoglobin antibodies for identification of human blood is described. The important feature of the present assay is absence of need for enzyme antibody conjugates. Human blood stains as old as 3 years show positive results by this method. This test is suitable for identification of human blood in forensic and epidemiological studies.