Final answer:
The Precipitin Test, which can distinguish between human and non-human blood, was developed by Dr. Heinrich Leonhard Brugsch. It works based on the principle of antigen-antibody reaction.
Step-by-step explanation:
The chemical laboratory test used to determine if blood evidence is human or animal is called the Precipitin Test. This was developed by Dr. Heinrich Leonhard Brugsch in the late 19th century. The test works based on the principle of antigen-antibody reaction. This means specific antibodies, when exposed to an antigen (e.g. human or animal blood), will generate a distinctive reaction. If there's a reaction when tested against human antiserum, the blood is identified as human. On the other hand, if there's no reaction, the blood is determined to be of animal origin. Though the Precipitin Test cannot specify which animal the blood comes from, it is highly effective in distinguishing between human and non-human blood.
Learn more about Precipitin Test