BeardendD+R100-105

We Have a Match Serology- the analysis of the properties and effects of serums •	Includes:blood, semen saliva, sweat and fecal matter Polymarker typing analysis- HLA-DQA1\DNA test for samples of limited quantity The behavior of blood in flight remains uniform Blood Typing- •	First identify if there is blood o	A powerful light or laser can be used o	Luminal can be sprayed across a scene •	Reacts with the hemoglobin in blood causing it to illuminate •	Takes five seconds to produce a bluish glow •	Room must be darkened •	Luminal may destroy some properties of the blood, so it is used limitedly o	Fluorescent reagent •	Two successive coatings of different solutions •	Illuminated with a UV light o	Phenolphthalein can be applied to area with hydrogen peroxide •	If blood is present it turns pink or red o	Leucomalachite green •	Turns greenish blue with blood o	Hemastix strip •	Turns green with blood •	Next, use the precipitin test to determine if blood is animal or human o	If line forms where the samples meet, the blood is human •	ABO test determines blood type o	Because of “secretors,” saliva, semen, and teardrops can tell the blood type DNA- can get picked up from many places •	Best obtained from a buccal swab of inner cheek •	DNA analysis is relatively new with CSIs