The Value of Presumptive Screening of Physical Evidence

Authors & ContributorsDavid ExlineCara Plese May 06, 2013 Presumptive tests for blood, seminal fluid, urine, and saliva are fast, relatively inexpensive, and can quickly eliminate a stain from further analysis if the results show the sample is not the fluid originally suspected. Likewise, microscopic analysis of hair is a nondestructive…

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