How does blood in vomit looks like?

Blood in vomit can appear in several forms, depending on its source and how long it has been in the stomach. It may look bright red if it comes from a recent injury or bleeding in the upper gastrointestinal tract. If the blood has been in the stomach for a while, it may appear dark brown or resemble coffee grounds due to the digestion process. The presence of blood in vomit is a medical concern and should prompt immediate evaluation by a healthcare professional.