Which of the following can be collected from a living individual?

• A. Blood
• B. Urine
• C. All of the Above
• D. Hair

Answer: (C)

Collecting evidence from living individuals includes samples that can be obtained with proper procedures and consent. Blood can be drawn through venipuncture by a trained professional and is routinely used for toxicology, DNA typing, and medical testing. Urine is collected noninvasively and is a standard sample for drug testing, metabolic screening, and toxins analyses, with strict collection and custody protocols. Hair can also be collected noninvasively and is useful for detecting drugs and toxins over a period of time; for DNA analysis from hair, a follicle root is usually needed, though hair shafts can support other tests. Because each of these sample types can be collected from a living person under correct procedures, all of the above apply.