FSC239Y5 Lecture Notes - Lecture 24: Post Office, Fire Marshal, Breathalyzer
Document Summary
Scratches on hands, nose bleeds, tissue samples under fingernails, clothing samples (trace evidence on clothes). Examine clothes under microscope, find blood, develop dna profile, link bloodstain to victim (mouth swab or something). If match, can link the suspect to the victim: does it make sense to do the testing? (ex: no sense in taking inner clothing when assault) Identify the most appropriate items to test: analytical unit: biology, 3 main fluids to look for: Saliva (use an alternate light source onto clothing, any saliva staining will fluoresce: analytical unit: toxicology. Ex: erratic driving on road, hit another car. Officer will investigate and do a breathalyzer test. To show this person was impaired, need to do a blood test to show how much alcohol was in the system. Could also be due to medication and drowsiness. Blood samples to try and find out how much drug is in a person" system. What kinds of fluids/tissues to they look at:
