If you’ve taken a DNA test from AncestryDNA or 23andMe, you own something most people never think about: a raw DNA file. It’s a small text file sitting in your account, packed with data points about your unique genetic makeup.

Most people stop at the ancestry pie chart. But that raw file holds far more than any ancestry report will ever show you.

What’s actually inside a raw DNA file?

A raw DNA file is a plain text file (usually .txt or .csv) containing a list of your genetic variants. Scientists call these SNPs, pronounced “snips,” which stands for Single Nucleotide Polymorphism. Each SNP is a position in your DNA where people commonly differ from one another.

Each line in the file looks something like this:

rsID         Chromosome    Position    Genotype
rs1801133    1             11856378    CT

Here’s what each column means:

rsID: A unique identifier for this specific genetic position (like a catalog number)
Chromosome: Which of your 23 chromosome pairs this variant sits on
Position: The exact location on that chromosome
Genotype: The two letters you inherited, one from each parent

A typical raw DNA file contains between 600,000 and 700,000 of these data points.

What can SNPs tell you?

Each SNP on its own is just a data point. But when you cross-reference SNPs against published genetic research, patterns start to emerge. Different variants have been associated with:

Nutritional needs: How you metabolize vitamins like folate (MTHFR), vitamin D (GC/VDR), and B12
Supplement response: Whether certain supplements may be more or less relevant based on your genetics
Exercise tendencies: Genetic factors associated with endurance vs. power, recovery speed, and injury predisposition
Sleep patterns: Variants linked to circadian rhythm preferences and melatonin metabolism
Cardiovascular wellness: Genetic factors researched in the context of heart health and lipid metabolism

The key word here is “associated.” Genetics is probabilistic, not deterministic. A variant linked to a trait in research doesn’t mean you will or won’t experience that trait. It means the statistical likelihood shifts.

How is a raw DNA file different from your test results?

When you get results from AncestryDNA or 23andMe, you’re seeing a curated interpretation of a small subset of your data. Your ancestry breakdown might use a few thousand SNPs. Health reports (if available) cover a few dozen well-studied variants.

Your raw file contains all the genotyped positions, hundreds of thousands of them. The vast majority never show up in your results because interpreting them requires specialized analysis.

Think of it this way: your test results are the summary. Your raw DNA file is the full dataset.

Is it safe to download and use your raw DNA file?

Your raw DNA file is your data. Both AncestryDNA and 23andMe let you download it from your account settings. The file itself contains genetic identifiers but no personally identifying information like your name or email.

That said, genetic data is inherently sensitive. When choosing a service to analyze your raw file, look for:

Encryption: Your file should be encrypted in transit and at rest
Data deletion: You should be able to delete your data at any time
No data selling: The service should never sell or share your genetic data
GDPR compliance: If you’re in the EU, the service should comply with data protection regulations
Transparency: Clear documentation about what happens to your data

What can you do with your raw DNA file?

Beyond the basic reports from your testing provider, your raw file can be analyzed for a much broader set of genetic wellness insights. Services that accept raw DNA uploads cross-reference your variants against larger research databases, covering areas your original test never touched.

SoDNAscan, for example, analyzes 256 carefully selected SNPs across 10 biological systems (cardiovascular, metabolic, neurological, nutritional, and more) and produces a personalized health book with confidence-scored insights based on published research.

The result isn’t a list of risks. It’s a structured, readable book that explains what the research says about your specific genetic variants, scored by the strength of the evidence behind each finding.

Getting started

If you have an AncestryDNA or 23andMe account, your raw file is already waiting. Download it, and you’ve taken the first step toward understanding what your DNA can tell you beyond ancestry.

Your genes don’t change. But what you can learn from them keeps growing as research advances.

What Is a Raw DNA File? A Simple Guide to Your Genetic Data