A separate parameter noted in the fecal blood test measures hemoglobin. Hemoglobin is always present any time there is an injury that produces whole blood. While hemoglobin may be somewhat degraded in the digestive process, it is at a much lower rate than albumin. When bleeding occurs in a horse’s gut, some of the blood degrades, leaving the rest to move through the digestive tract until it expels through the horse’s feces. Therefore, hemoglobin in a horse’s feces could have originated from anywhere within the GI tract.