It's Hard to Ignore the Results of Two Tests

The Genetic Genealogist reports that two different people have performed comparative studies of 23andMe and DeCodeMe's services, finding that they both offer very low error rates and are highly reproducible. Both Ann Turner and Antonio C B Oliveira at Longa Vista, who wrote a computer program to compare his results, found that of the more than 550,000 SNPs that both tests scan for, they called at nearly 100 percent similarity.