GENEALOGY-DNA-L ArchivesArchiver > GENEALOGY-DNA > 2004-02 > 1075849500
Subject: Re: [DNA] GATA H4 Discrepancy Between FTDNA and DNA Heritage
Date: Tue, 3 Feb 2004 18:05:00 EST
In a message dated 02/03/04 1:05:35 PM Pacific Standard Time,
> I just completed updating my tables in my "labmerge" page which shows
> the results for people in my Kerchner Surname Y-DNA Project who have
> been tested at more than one lab. Both people in my project got an 11 at
> marker GATA H4 in the results received today from FamilyTreeDNA.com
> while both people had obtained a 12 at GATA H4 from prior tests at
> Ancestry.com/Relative Genetics and DNAHeritage.com.
There's undoubtedly a difference in nomenclature. From the description at
STRBase, I gather it depends on whether one counts GATA or TAGA as the repeat
pattern. GATAGATAGATA has three GATAs and two TAGAs.
On that page there is a link to "SRM 2395" (Standard Reference Material). The
NIST (National Institute of Standards and Technology) has created some DNA
samples which different companies can analyze to calibrate their results. That
would be one way to resolve the discrepancy.
Ann Turner - GENEALOGY-DNA List Administrator
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