FSC239Y5 Lecture Notes - Lecture 20: Laundry Detergent, Body Fluid, Harvard Step Test
Document Summary
Biology section: hair and fibre, body fluid is, dna analysis. Chemistry section: trace evidence: paint, gsr, glass, fire, explosives, unknown chemicals, hair and fibre. Toxicology section: impaired driving, suspected poisoning, suspicious death. Use of cfs findings: investigative aid, support chargers, eliminate suspects, public safety and protection, public service. 5,000 cases per year: reports per years. Wearer = clothes, handler = gun: item types. Weapons - knives, guns, weapons of convenience. Processed by cro at cfs evidence sealed and bar-coded. Different units w/in biology section: screening unit. 2 lines = human, 1 line = animal. Chemical testing: phadebas test , paper press test, amilades will react and turn blue, if blue than saliva may be there. Then have to do another, confirmatory p30/psa, 3 lines = semen, or microscopically. After ejaculation able to detect sperm in these cavities. Majority of semen lost from vagina w/in 2-3 days.
