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sent by ME • Orders tests to determine cause or manner of death • DNA testing • Fingerprints & palm prints Toxicology • Detection of drugs, alcohol, poisons • Gas chrom. to test concentration of alcohol in blood – tested first • Urine – barbiturates or other depressants – immunoassay • Immunoassay = presumptive screening tool for specific chemical – done 1st • Then, confirmatory test – GC-MS – get quantitative results • 3rd – GC – for tranquilizers, narcotics, antidepressants, etc. • Then, immunoassay on urine for narcotics (= opium & opium-derived drugs), cocaine, methadone Histology • = study of tissues • thinly sliced and stained • Stains • - eosin & hematoxylin - detect cancers • - crystal violet - detects bacterial infections (purple) Neuropathology • = study of disease and trauma associated with the nervous system (most often, brain) • more than half of deaths for ME - neuro • neuropathologist often determines cause of death • studies diseased tissues and tumors Serology • = study of blood, semen, & other body fluids in reference to legal matters • sees if victim died from blood-borne pathogen infection • may help ID victim or perpetrator • ex. blood type (class characteristic) • ex. DNA profile (individual characteristic)