What is the boiling point of blood?

Human blood boils at approximately the same temperature as distilled water, 212 degrees Fahrenheit. This assumes that the liquid, either blood or water, is at 1 atmosphere of pressure. Any decrease in barometric pressure lowers a fluid's boiling point.

Human blood is a solution, but it is not very hypertonic when compared to distilled water. The tonicity of human blood is comparable to a 0.9 percent saline solution. An intravenous solution of 0.9 percent saline is often called normal saline because it has the same tonicity as the human body. This less than 1 percent increase in tonicity has a negligible impact on a fluid's boiling point.