First Comparison of 23andMe v4 and v3 Chips

CeCe Moore reported on her blog the first comparison I have seen between 23andMe’s v3 and v4 chips. 

It has been a concern over how 23andMe’s v4 chip would compare. The company admitted the new chip was looking at fewer SNPs than the old chip: 600,000 – 700,000 SNPs for v4 vs. 967,000 SNPs for v3.

Here’s the November 23andMe blog announcement for the new chip They downplayed the major reduction in SNPs for the v4 chip. How can they expect a testing reduction of roughly 30 – 40%  not be a major downgrade? It is too early to tell how the imputed values will work.

There are some good points on the portability of the v4 chip to Family Tree DNA (FTDNA) and GEDmatch. Hopefully the v4 chip will be compatible with FTDNA and GEDmatch.


About Wichita Genealogist

Originally from Gulfport, Mississippi. Live in Wichita, Kansas now. I suffer Bipolar I, ultra-ultra rapid cycling, mixed episodes. Blog on a variety of topics - genealogy, DNA, mental health, among others. Let's
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1 Response to First Comparison of 23andMe v4 and v3 Chips

  1. Dan says:

    v4 chip format is is not compatible with FTDNA and GEDmatch currently

    Liked by 1 person

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