Methemalbuminemia

The presence of methemalbumin in the circulating blood, indicative of intravascular hemolysis with rapid hemoglobin breakdown; found in some patients with blackwater fever or paroxysmal nocturnal hemoglobinuria; described as a means of differentiating severe (hemorrhagic) from mild (edematous) pancreatitis, and also described in other acute conditions such as strangulation obstruction of intestine and mesenteric artery occlusion