A polygraph test can be passed by manipulating the body's response to control questions. A participant's lies are only considered lies when they register a higher response than control questions. The results can therefor... More » Science Forensic Science

The only "natural" ways to pass a drug test is to allow sufficient time for drug metabolites to clear the body or to dilute the urine by drinking excess water. Insufficient evidence exists to prove that natural "detox" p... More » Health

A buccal swab test is a method of collecting DNA samples. According to the Laboratory Corporation of America, DNA samples are collected by rubbing the inside of the mouth with cotton-tipped swab. Unlike obtaining DNA fro... More » Science Forensic Science
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Most home formaldehyde test kits include a badge or pump for collecting an air sample that is returned to an accredited laboratory for testing. Formaldehyde is of special concern in new or remodeled homes. More » Science Forensic Science

An undertaker's roll is to prepare a body for the embalming process as well a prepare the body for a funeral service if necessary. When an embalming takes place, an undertaker cleans the body, injects embalming fluid int... More » Science Forensic Science

The purpose of embalming is to preserve the tissues in the body and delay decomposition. Many people choose embalming because it helps the body look more life-like for public viewing purposes at a funeral or memorial ser... More » Science Forensic Science

Regular fingerprinting methods conduct tests and make records of finger and thumb prints of an individual, while DNA fingerprinting tests the deoxyribonucleic acid of a person, which is located within the nucleus of all ... More » Science Forensic Science