Which test would be conducted to determine if blood is human?

To determine if blood is human, a typing test is specifically performed. This test focuses on identifying specific proteins found on the surface of red blood cells, known as antigens, which can indicate the species origin of the blood sample. Human blood has unique antigens that differentiate it from blood of other species; therefore, a typing test is effective in confirming whether the blood is indeed of human origin.

The emphasis on typing as the appropriate choice stems from its capability to provide detailed information regarding the blood's origin. This is crucial in forensic science when establishing evidence in criminal cases or identifying bodies. Other tests play roles in different aspects of forensic analysis, but they do not specifically serve the purpose of confirming whether the blood is human. For example, a screening test generally assesses the presence of blood regardless of species, while a confirmatory test usually focuses on validating positive findings from screening tests, and microscopic tests can analyze blood sample characteristics but do not definitively identify species. Thus, a typing test stands out as the correct method for determining if blood is human.