Hi Mark, Thank you for your article – very helpful. I am adopted from Asian country and live in Australia. I don’t know who my biological parents are and don’t know if I have any siblings. I have been researching through all these websites trying to decide which dna test to take – confused by it all. Your article has helped me to decide on FTDNA (family history and mtDNA) – hoping that it would give me ancestry makeup inherited from my bio parents and ancestry details on my mothers side (as I am female, limited to this test). In… Read more »
When asked about how database size affects ancestry results, David Nicholson, co-founder of Living DNA, told us, “The tests absolutely rely on the reference database. If you have Polish ancestry but there are no people in the database who are Polish, then what the test will do is show what the next closest group is next to Polish, like German or Eastern European ancestry.” Each ancestry DNA service has its own sample database and reference panel made of the DNA samples collected from their users and information collected from sources like the 1000 Genomes Project. The database consists of all this information collectively. A reference panel is made of certain curated samples with known family history and roots in a specific place. The services use insights gleaned from the reference panel to give you geographical ancestry results. In theory, a larger database leads to more information available to create a good reference panel, which then leads to better results for customers.  
Most direct-to-consumer DNA test companies warn that the tests may reveal things you wish you didn’t know about your family. For example, you could find out that one of the people who raised you isn’t your biological parent or that there’s an entire branch of your family you didn’t know about. There isn’t a way to prepare for a shock like that, but you can opt out of a company’s family-matching services if you’d rather not know.
EasyDNA UK specialises in providing DNA tests that are affordable, accurate and confidential. Our home paternity test is on special offer at just £99 for a limited period. There are NO EXTRA FEES. Sample collection is performed using our easy-to-use DNA test kit. Your DNA paternity testing results are ready in only 3-5 working days. We also offer the option of getting results in 3 working days with our express service (from receipt of samples at the laboratory). EasyDNA tests 21 genetic markers for total accuracy so you can have the peace of mind that you need. A home paternity test provides a 99.99% accurate result if the alleged father is the biological father and a 100% accuracy if he is not.
More controversially, some of these kits profess to tell you your biological (as opposed to actual age) by measuring the length of your telomeres (in basic terms, the caps at the end of each strand of DNA that protect chromosomes, like plastic tips at the end of shoelaces). Other tests, such as 23andMe, predict higher risks of developing serious conditions, such as multiple sclerosis, Alzheimer’s and Parkinson’s, including the test for BRCA1/BRCA2 (breast and ovarian cancer) that Angelina Jolie famously underwent, going on to have a preventative double mastectomy and surgery to remove her ovaries.
×