Methods for DNA Testing?

[Inquizzzitor]

For those who have personally tried them, I am looking for a list of the DNA companies and how they physically test. For example, when I did 23andMe I had to spit in a tube.

My grandmother is old and could be tested but I don't think she can muster up enough saliva for the tube - or she would lose interest beforehand.

What companies test with other methods like a cheek swab for example? I think we could manage that.

Suggestions welcome!!!

[Rgvgjhvv]

MyHeritage does a cheek swab

[Rædwald]

I know that AncestryDNA and 23andMe use the saliva sample, but I believe LivingDNA only requires a cheek swab. Although those tests tend to be leaning towards British Isles populations specifically I believe.

[Inquizzzitor]

Well as it so happens my grandmother is definitively half Orcadian (Scottish), one quarter Irish or Scotch-Irish (unsure), and the remaining 1/4 is likely also from the British Isles/Ireland...so would that make LivingDNA more or less accurate?