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Summary of GEDmatch Tier 1 One-to-Many Comparisons Among 12 Different Test Kits of the Same DNA Sampled at the Same Time
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Test TypeTotal SNPs in Uploaded KitSNPs after GEDmatch “slim”Total Matches in Database¹Presumed Matches < 10cM²≥ 30.5cM⁴≥ 20cM≥ 10cM
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At Overlap Thresholds, Default = 45K:³
All Matches>99K
90K - 99K
80K - 89K
70K - 79K
60K - 69K
45K - 59K
All Matches>99K
90K - 99K
80K - 89K
70K - 79K
60K - 69K
45K - 59K
All Matches>99K
90K - 99K
80K - 89K
70K - 79K
60K - 69K
45K - 59K
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30X WGS Superkit2,080,5671,019,45963,37154,129140136040009439220190009242883113462513
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23andMe v3959,286616,80165,59154,47514612831400099387911751000111168110169214023293
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23andMe v4598,327369,595100,94384,0501531290323161103962032121241689392030372937369
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23andMe v5635,966397,773182,077153,2311552211046254810328123634720433728846356950513169853701611890
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AncestryDNA v1701,478458,26875,90662,96415113330150010769549010830129428940136143700674
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AncestryDNA v2668,011402,45163,15051,82914512620311399487220128721113218214202052533355
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FTDNA v2 (OmniExpress)720,449468,19067,77756,1491461273046009998841101022011628821616563153395
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FTDNA v3 (GSA)627,114385,093138,350121,2661612714321832191078101612621532561041708463445692403206230091072
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Living DNA v1 (GSA)618,640402,069182,807154,94515222110482445101782227371188324278623379365109710251614610973
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Living DNA v2 (ThermoFisher)
698,531563,991161,133146,05914914500040102199700022215074143781086688
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MyHeritage v1 (OmniExpress)
720,922468,39567,77756,1491461273016009998841101022011628821616563153395
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MyHeritage v2 (GSA)610,128390,654134,400117,742156271626162819101911279186120228102166586717850169716362760973
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¹ All GEDmatch data initially compiled 3 November 2021; updated 16 September 2022.
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² With the list limit set at the maximum of 100,000, GEDmatch “memory exceeded” errors invariably resulted when setting centiMorgan thresholds lower than 10cM. Note also that, sometime subsequent to these data runs, GEDmatch removed the option to display more than 7,500 kits that met the matching criteria when using the Tier 1 One-to-Many Full Utility. For that reason, some of these results can no longer be replicated.
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³ The “Overlap Cutoff” threshold sets the minimum number of the same SNPs that two kits must share. The default value is 45,000; available options range from 0 to 500,000.
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⁴ Using the “cM Size” setting of 40cM will automatically return matches as low as 30.5cM. An explanation for this is unclear.
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Version 2, Compiled September 2022, CountingChromosomes.com
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