What type of exudate contains both serum and blood?

The type of exudate that contains both serum and blood is known as serosanguineous. This term specifically refers to an exudate that has a clear, yellowish fluid mixed with a small amount of blood, resulting in a pinkish appearance. This type of exudate is typically seen in healing wounds and indicates a combination of serum from the plasma and red blood cells.

Sanguineous exudate would contain primarily blood, giving it a red appearance, whereas serous exudate consists mainly of serum with little to no blood, leading to a clear or straw-colored fluid. Purulent exudate is characterized by the presence of pus, which consists of dead white blood cells, bacteria, and tissue debris, and does not apply to the mixture of serum and blood. Understanding these distinctions helps in evaluating wound healing and potential complications.