Downloading Your Family Finder™ Data

The Family Finder Downloads page allows you to download your autosomal raw data in a variety of formats.

Your Finder Finder test uses a microarray SNP chip to test over 700,000 autosomal single nucleotide polymorphisms (SNPs). The Family Finder - Downloads page allows you to download your autosomal raw data to analyze the results of each SNP.

Accessing Your Raw Data Download Page

You can access Family Finder Downloads from your dashboard or from your navigation bar.

To access from your dashboard:

Sign in to your kit.
On your dashboard, locate the Autosomal DNA Results & Tools widget.
On the Autosomal DNA Results & Tools widget, click the See More button, and select Data Download.

To access from your navigation bar:

Sign in to your kit.
On the navigation bar at the top of the page, go to Results & Tools > Autosomal DNA > Download Raw Data.

Finding the Right Format

Autosomal raw data is formatted according to the Genome Reference Consortium Build 37 (GRCh37) structure for SNP positions. Because of the nature of autosomal DNA, X-chromosome data is sometimes not used for particular research purposes. For this reason, Build 37 raw data is available in three formats:

Build 37 Autosomal Raw data - This includes all autosomal SNPs except those found on the X chromosome.
Build 37 X Chromosome Raw data - This includes only autosomal SNPs found on the X chromosome.
Build 37 Concatenated Raw data - This includes all autosomal SNPs including those found on the X chromosome.

Downloading your raw data

Family Finder raw results files are comma-separated-variable (CSV) files. We compress them into GZ (zipped) files for storage and portability. In order to properly read these files you must first extract them from their compressed format. To extract the CSV file from the GZ file, you will need compression/decompression software to unzip the file. Many such programs are available at no charge.

Once you have extracted a CSV file, you can open it with a text-editing program or a spreadsheet program.

Reading your raw data file

The results files contain the following four data columns:

RSID – Displays the RS number for the SNP in the NIH dbSNP database.
Chromosome – Displays the name of the chromosome where the SNP is located. For an autosomal file, that is 1 through 22. For an X-chromosome file, that is X.
Position – Displays the specific location on the specified chromosome of the SNP.
Result – Displays the allele values for the SNP.

These tables show the possible values for the Result column and their meanings. We report results according to each microarray chip maker’s specifications.

Result*	Allele Value	Meaning
*For men, the X-chromosome raw data file shows doubled values (DD, II, AA, CC, GG, or TT) as placeholders even though in reality they only have one X chromosome.
DD	deletion, deletion	There are two copies of the deletion. This is a homozygous value.
II	insertion, insertion	There are two copies of the insertion. This is a homozygous value.
DI	deletion, insertion	There is one copy of the deletion and one copy of the insertion variant. This is a heterozygous value.
AA	Adenine, Adenine	There are two copies of the adenine variant. This is a homozygous value.
CC	Cytosine, Cytosine	There are two copies of the cytosine variant. This is a homozygous value.
GG	Guanine, Guanine	There are two copies of the guanine variant. This is a homozygous value.
TT	Thymine, Thymine	There are two copies of the thymine variant. This is a homozygous value.
CT or TC	Cytosine, Thymine	There is one copy of the cytosine and one copy of the thymine variant. This is a heterozygous value.
AG or GA	Adenine, Guanine	There is one copy of the adenine and one copy of the guanine variant. This is a heterozygous value.
—	no call	The results were not clear for this SNP. A small percentage of results like this are expected from microarray chips.