Discussion » Questions » Science and Technology » Did you ever realize they don't extract DNA from poo? Why's that?
WM BARR . =ABSOLUTE TRASH

Did you ever realize they don't extract DNA from poo? Why's that?

Posted - July 6, 2017
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Responses


  • Seriously, I would have never thought that. 
      July 6, 2017 4:07 PM MDT
    1

  • 46117
    I think about it all the time and I forget to find out the answer though.

    It makes no sense that they don't have any there.
      July 6, 2017 4:12 PM MDT
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  • 10725
    Probably because there's a lot of stuff in there that isn't you. It might even contain someone else's DNA, depending on your recent activities.
      July 6, 2017 4:18 PM MDT
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  • 53394

    Jandy SD, the coupling of lovers.

    ~
      July 6, 2017 9:30 PM MDT
    0
  • D&D

    682
    Because they'll find all sorts of foreign DNA in there. Food, parasites ....
      July 6, 2017 4:18 PM MDT
    1

  • 22891
    maybe cause its gross
      July 6, 2017 4:42 PM MDT
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  • 2500
    Of course that's done.

    There's DNA testing for rectal and colon cancers from cells taken from fecal samples. Read all about it here:
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4606173/
      July 6, 2017 5:08 PM MDT
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  • 5354
    Yes. No DNA there unless the person is bleeding or wounded inside.

    But D&D is right they could probably find DNA from food you ate that havet really been digested. meat, veggies, bread, etc. This post was edited by JakobA the unAmerican. at July 6, 2017 9:31 PM MDT
      July 6, 2017 5:44 PM MDT
    1

  • 2500
    Intestinal tissue is always sloughing off cells, complete with DNA. Problem is with DNA testing that there's tons of other non-human cells being expelled along with those cells (think probiotics). That usually makes differentiating between the different cell types difficult unless specific markers can be isolated, which is the case with the occult stool DNA testing for various colon and rectal cancers. Better go back to class and review that lesson! This post was edited by Salt and Red Pepper at July 6, 2017 9:31 PM MDT
      July 6, 2017 5:53 PM MDT
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  • 53394


    Really?  Sure seems to me that it would be chocked full of DNA.  You Earthlings never cease to amaze me.

    ~
      July 6, 2017 9:29 PM MDT
    0