DNA can find cousins, test a family story and help when records are missing, and it works best alongside the records described in our Czech and Slovak records hub, not instead of them.
Start with MyHeritage
MyHeritage is our primary recommended DNA platform. According to its own help pages, it has not accepted DNA uploads from other companies since August 2025, so to appear in its database you need a MyHeritage kit. You can still transfer MyHeritage results out to FamilyTreeDNA, which accepts free transfers. MyHeritage also publishes pages showing the most common ethnicities among its DNA users in Czechia and in Slovakia, and for both countries it lists East European and North and West European. That shows how mixed Central European results can look. Prices and features change, so check MyHeritage for current terms.
How other tests differ
- AncestryDNA offers an autosomal test only, has the largest database, and accepts no uploads from other companies.
- FamilyTreeDNA offers the autosomal Family Finder test and also Y-DNA and mitochondrial DNA tests, which follow a single paternal or maternal line. It accepts free transfers from other companies.
- 23andMe went through bankruptcy in 2025 and is now owned by the nonprofit TTAM Research Institute, so read its current privacy terms.
Why Central European results look mixed
Borders in Central Europe changed repeatedly, and families moved across them. A Czech or Slovak family tree may include German-speaking, Hungarian-speaking or Rusyn branches, so an ethnicity estimate that names several neighboring regions is not surprising and does not by itself contradict a paper trail. Treat percentages as estimates and give more weight to your DNA matches and your documents.
What DNA can and cannot tell you
- Autosomal tests are most useful for finding cousins across recent generations, while Y-DNA and mitochondrial tests follow single lines further back.
- A DNA match is a lead, not proof. Confirm every connection with parish registers and civil records.
- Citizenship is documented with records, as our citizenship guide explains. The consular pages we read list documents, not DNA, as evidence.
Connect DNA to records
The most reliable method is to ask close matches for their trees, then confirm each link in the records. Start with The Best DNA Test for Czech and Slovak Ancestry and browse DNA & Tools.
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