Bloody+Notes+TEJ

Is it Blood? If human how close is it to human that was there?

Presumptive Test - It might be blood, some kind of blood (maybe). If there is a negative result absolutely not blood. Postive result it might be. - Tests --Catalytic Test ---Blood -> Hemoglobin (makes blood red, carries oxygen) -> contains a heme -> in center of heme there is an iron (Fe) -> Catalyzes breakdown of H2O2 (heme from hemoglobin breaks down of hydrogen peroxide) ---Visible blood stains === =Kastle Meyer Test++++If it's blood it turns pink...swab stain add drop of PHTH/add a drop of peroxide.(super senitive) === =Hemastix - turns green if theres blood present, positive result ---Non Visible Blood stains === =Luminol test - gives you idea that it may be blood (Blue color (light) when lights are off) extremely sensitive.++++can do large areas quickly, can pick up sample and take it too lab, won't damage it. Wavelength is really short that's why not visible in light.

2. Color Tests/Crystal Tests (confirms blood) Take blodo from presumptive test to the lab to be confirmed. Crystal tests are then used. Tests based on hemoglobin... Take chemicals and put on the slide with bloo on microscope slide. You ten warm the slide if hemoglobin crystals form, blood is present. ---> Super Sensitive tests that has all advantages. Confirms blood without a doubt/can detect blood stains. a) Takayama tEST B) Teichmann Test

Is it Human blood? - Precipitri Test === =Take human blood, inject human blood into squeaky the mouse. Squeaky's blood produce's antibodies against whatever blood was inserted...anti-human blood antibodies!!!! KILL animal, bleed out animal, spin blood in test tube. Serum on top collected off top in test tube.++++Take antibodies and run precipitin ring test combining with blood: human blood on top of animal serum containing anti-human antibodies. ++++++++blood sample contains antigen on top of cells, antibodies to those and they clump (Antigens/antibodies stick). If animal blood no clumping.