In medicine, when refering to human feces, Blood in stool can refer to several distinct conditions: See also Medical doctor (BE), Physician (AE), and Medical school. ... Human feces vary significantly in appearance, depending on the state of the whole digestive system, influenced by diet and health. ...
In infants, the Apt test can be used to distinguish Fetal hemoglobin from maternal blood. In medicine, melena or melaena refers to the black, tarry feces that are associated with gastrointestinal hemorrhage. ... Fecal occult blood is a term for blood present in the feces that is not visibly apparent. ... Hematochezia is the passage of bright red blood from the rectum, with or without feces. ... The Apt test is a medical test which can be used when an infant is presenting blood in stool, or to test for Vasa previa. ... Fetal hemoglobin protein structure Fetal hemoglobin (also hemoglobin F or HbF) is the main oxygen transport protein in the fetus during the last seven months of development in the womb. ...
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