ABH antigen into body fluids and secretion

Forensic scientists collect the body fluid stains found at the scene of the crime and perform a variety of tests on them in order to find out the origin or where these fluids came from. One important aspect to serology is determining whether or not stain resembling blood or some other stain that bears a similar resemblance. Large percentage of population secretes their blood type ABH antigen in their body fluids and secretions like saliva and mucus secretion throughout the respiratory, digestive and urogenital tract and such individual are secretors.