Sanguine fluids are anatomical fluids in the human body that are red in color. The term "sanguine" is commonly used to describe a person's temperament as being optimistic and positive. However, when referring to bodily fluids, the term can be interchanged with "blood" or "hemoglobin." Other synonyms for sanguine fluids include plasma, serum, and blood cells. Hematology is the study of sanguine fluids and their role in diagnosing and treating various diseases. Accurate identification and analysis of sanguine fluids are crucial for medical professionals to determine the causes and appropriate treatments for a range of conditions and illnesses.