DNA testing

Ancestry probably have one of the larger Autosomnal databases out there, they've passed the 1 million tested in last year or so, and doing fairly heavy advertising, interesting you post your sample to their office here in Dublin.

Seanachai, in general most commerical testing companies do not use aDNA genomes, mainly as these are (a) fairly new (b) not hugely applicable for people looking for ancestry in genealogical time period.

Of course if you do get tested with any of major commerial companies, you can always download raw data and submit it to sites such as Gedmatch, which often included "Calculators" that will at times include ancient samples etc.

FTDNA does allow people to transfer in their 23andme results, this also works for V1 of ancestrydna, but think current version can't be transferred just let. (hopefully they are working on fixing that).

For MtDNA testing FTDNA is place to go (likewise for Y-DNA in men they have perhaps broadest range of tests available)