forensics 2 - This is similar to benzidine o It is no...

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Forensics Quiz 2 Presumptive Screening Tests o Benzide Positive result turns blue Contains carcinogen (this causes cancer) 1974 o It is no longer used by scientiests o Phenolphthalein A positive result showing it is blood Is pink This is still used today o Other substances produce other colors within the test other than pink. o O- Tolidine A positive result for blood is blue
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Unformatted text preview: This is similar to benzidine o It is no longer used today and has been replaced with the tmb testing. o TMB Tetramethlabenzidine A positive result for blood is blue-green o This is the most common form of blood test used today o Leucomalachite Green LMG A positive result for blood is green o It is not as sensitive as tmb or a specific as phenolphotein....
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