If you have had a DNA test in the past, it is very likely that you have a file saved on your computer with a strange name, filled with incomprehensible letters and numbers, but what is a genetic raw data file and what is it used for?
Today, in 2026, genomic science has advanced so much that this small file contains much more information about you than you could ever imagine.
What exactly is genetic raw data?
Raw data is the file that contains the unprocessed information from your genome after your saliva sample has been analysed. Think of it as the source code for your body: an immense sequence of letters (A, C, G, T) that form your DNA.
How is my genetic raw data read?
Raw data files provide genetic data, where each field contributes a different value or detail:
- rsid: is the unique identifier that defines a human variation in the public genetic database dbSNP.
- chromosome: indicates the number of the chromosome on which the variant is located. The genome includes 22 pairs of autosomal chromosomes (numbered 1 to 22), the sex chromosomes (X and Y), and markers on mitochondrial DNA, which are identified as 'MT'.
- position: is the exact physical location of the genetic marker, based on the human genomic reference coordinates GRCh37.
- genotype: details the specific alleles (the DNA letters, such as AA, AG or CC) detected for that analysed genetic marker. It contains the genotype results of the genetic markers.
What can I discover about myself?
Genetics is a living science. What we knew a few years ago has nothing to do with what we know today. Currently, when processing your file at tellmeGen, our algorithm cross-references your data with the latest validated scientific studies to offer you more than 440 items of information.
This is everything your genetic raw data has to tell you about yourself:
1. Predisposition to complex diseases
Your DNA contains markers that indicate whether you have a higher or lower genetic probability of developing certain pathologies throughout your life compared to the general population. You will be able to know your risk regarding cardiovascular diseases, different types of cancer, autoimmune problems, and neurological conditions.
Did you know that you can be a carrier of a genetic disease without suffering from it? Raw data allows us to identify if you are a carrier of certain mutations associated with hereditary diseases (such as cystic fibrosis or haemophilia). This information is of incalculable value when planning a family, as it allows you to know the risk of transmitting these alterations to your future offspring.
Not everyone processes medication in the same way. From your genetic raw data, we can know how your body metabolises dozens of different drugs (from painkillers to antidepressants or oncological treatments). This can help healthcare professionals decide which medication might be most effective for you, better adjust the dosage, and minimise the risk of side effects.
Your genetic code also hides curious and fascinating details about who you are. From your pain tolerance and your tendency towards male pattern baldness, to the quality of your sleep, or how you perceive certain tastes (such as the bitterness of certain vegetables).
5. Wellness
Do you have a predisposition to suffer from a deficiency of certain vitamins (such as vitamin D or B12)? Are your muscles genetically better prepared for strength or endurance sports? Your genetic raw data offers you a personalised guide to optimise your physical performance and nutrition based on what your body really needs.
Of course, you will also be able to explore your roots. We will compare your genetic information with dozens of reference populations to plot a detailed map of your ethnic and geographic origins, showing you which parts of the world your ancestors came from.
Is it safe to upload my genetic information?
When dealing with such sensitive data, security is the top priority. At tellmeGen, we operate from Europe under the strict General Data Protection Regulation (GDPR). When you upload your genetic raw data, the information is encrypted using bank-grade security protocols and is anonymised. You are the sole owner of your information, and it is never shared with third parties without your explicit consent.
You have already done the hardest part: taking the DNA test. Now, taking the next step is quick, safe, and 100% online: interpreting your raw data correctly.
