How can blood at a death scene be analyzed?

Blood at a death scene can be analyzed through several methods, including serological tests to determine blood type, DNA analysis for identification, and the examination of blood spatter patterns to infer the dynamics of the incident. Forensic scientists may also look for the presence of specific substances, such as drugs or toxins, which can provide insights into the cause of death. Additionally, the location and distribution of blood can help reconstruct the events leading to the death. Overall, a comprehensive analysis combines biological, chemical, and physical assessments to gather evidence.