In case you missed 23andMe’s fire sale on DNA Day in April, here’s your chance to pick up one of the company’s personalized genetic test kits again for just $99. The Mountain View, California-based genetic test provider announced today that it is rolling out a brand new chip that can test around one million single-nucleotide polymorphisms, compared to just 600,000 SNPs on the old platform. And to celebrate the new technology, for a limited time customers can snag the test for just $99 — a $400 savings from the regular price.

23andMe’s third-generation chip is based on Illumina’s HumanOmniExpress array, which includes 733,302 genome-wide markers, combined with an additional 200,000 custom SNPs. According to the company’s press release, the new chip has better coverage of genes associated with drug metabolism, autoimmune conditions and Mendelian diseases such as Tay-sachs.

With the new genotyping platform, 23andMe has also rolled out a new business model. Gone are the separate health and ancestry components; instead, the company is only offering the comprehensive full genome scan. In the past, 23andMe also continually updated customers’ profiles for free as new genetic links from the latest genome-wide association studies came in. Now, however, the company is requiring a $5 per month subscription fee to keep accounts up-to-date.

Over at Genetic Future, geneticist-blogger Daniel MacArthur has a comprehensive break-down of the new chip’s specs, as well as the discount code needed to cash in on the $99 reduced price.

Image by KeepTheByte via Flickr Creative Commons