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The United States national DNA database is called Combined DNA Index System (CODIS). It is maintained at three levels: national, state and local. ... As of March 2011, 361,176 forensic profiles and 9,404,747 offender profiles have been accumulated, making it the largest DNA database in the world.
The following list shows some common sources of DNA evidence:
A weapon, such as a baseball bat, fireplace poker or knife, which could contain sweat, skin, blood or other tissue
A hat or mask, which could contain sweat, hair or dandruff
A facial tissue or cotton swab, which could contain mucus, sweat, blood or earwax
A toothpick, cigarette butt, bottle or postage stamp, all of which could contain saliva
A used condom, which could contain semen or vaginal or rectal cells
Bed linens, which could contain sweat, hair, blood or semen
A fingernail or partial fingernail, which could contain scraped-off skin cells
What is Touch DNA?
One such technology is called "Touch DNA" or "Contact Trace DNA." Touch DNA refers to the DNA that is recovered from skin (epithelial) cells that is left behind when a person touches or comes into contact with items such as clothes, a weapon, or other objects. A person sheds about 400,000 skin cells per day, but it is the lower skin cells that will provide the best DNA profile. These cells are typically recovered when force is used such as on the victim's clothes or at a crime scene after a struggle has occurred.
These epithelial cells can be lifted with a tape, swabbed with a Q-tip, or even scraped from the clothes of the victim, or objects. Even food can be scraped for skin cells. According to the Bode Technology Lab, as little as 5 to 20 skin cells are all that is required to obtain a Touch DNA sample.
originally posted by: TheLead
a reply to: rickymouse
But much more cost effective and less scrutiny with those who are willing to pay for this service. I mean if we're worried about the potential for a cop to plant a gun or drugs, what power could one hold over you with your DNA.
"No, no, no paperwork, just... just sprinkle some crack and DNA on him. Let's get out of here."
originally posted by: Blaine91555
They will have to pry my DNA from my cold, dead hands or a toothbrush, a snot rag or off the rim of a coffee cup!
originally posted by: NightSkyeB4Dawn
I know there are many that will think that if you have nothing to hide, then you have nothing to worry about. For those, I would ask them to think about how DNA evidence can be manipulated, how long it can last, and how it can be used against even those that are innocent.
originally posted by: NightSkyeB4Dawn
I think this is more than a slippery slope. This is a cliff that many innocent people may find themselves at the precipice.
originally posted by: CornishCeltGuy
a reply to: NightSkyeB4Dawn
I'll never use a private company DNA thing, but the UK authorities already have my DNA, taken under duress even though I was released without charge after investigation. It works as well, I know people who've been arrested for one thing, then a few weeks later arrested for something they'd forgotten about after the police found a match on their database.
In some parts of Britain, barber shops and hair salons are getting their trash bins raided for the hair so in a burglary or whatever they throw it all over the crime scene.
originally posted by: Asktheanimals
I worry that they have been collecting DNA through hospitals and doctors for a long time. In fact, I would be surprised if it wasn't happening. The number of criminal convictions based solely on DNA evidence is also a nightmare. How the hell does anyone know for certain they aren't being paid off to get certain results?