How reliable are DNA results from a saliva swab?

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Offline thedoc

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How reliable are DNA results from a saliva swab?
« on: 05/05/2016 13:50:02 »
Rick asked the Naked Scientists:
   Have been getting conflicting answers on the question of a saliva swab for the purpose of "dna" after my transplant.  I sent one in for an ancestry test and didn't come back being related to the people I should have.  I know about the blood since I went from A  to B
What do you think?
« Last Edit: 05/05/2016 13:50:02 by _system »

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Offline exothermic

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Re: How reliable are DNA results from a saliva swab?
« Reply #1 on: 08/05/2016 03:00:36 »
Depends entirely on the testing methodologies being utilized.

In terms of which would provide optimal accuracy.... it would be blood. DNA methylation & hydroxymethylation are tightly regulated in living cells and saliva is primarily dead cells