Yes, the FRE or Federal Rules of Evidence dictate and spell out doctrines related to the collection of evidence as well as the presentation of evidence. Very strict rules are in place to maintain the quality and sanctity of the evidence. Further, local jurisdictions must abide by local rules and regulations in addition to the federal rules. Law enforcement agencies at all levels also have very strict rules that govern evidence collection procedures, storage of evidence, and the presentation of evidence at trial. This area of law is called Criminal Procedure. CP is a sub-unit of criminal law. This area of the law also dictates search and seizure doctrine.