Hair/Fiber: Reliability

• The hair from a human head has odds of 4500 to 12 from coming from the same person, which is .0022%
• Fibers are different, as there are many different fibers in existence 
• It depends on how 'rare' that fiber is or how much is found
• Fibers are very common on the crime scene, found on the victim, their clothes, their fingernails, ect.
• As they're so common, it can be difficult to find & test all fibers from a scene