No. tellmeGen provides genetic information for informational purposes: it describes your variants and genetic susceptibility, but does not confirm or rule out any disease.
No result should be used on its own to make decisions about your health or change your medication. A healthcare professional should assess it and, where appropriate, confirm it with a diagnostic test in a clinical laboratory, for example by sequencing the variant. If you have symptoms or a family history of a disease, consult your doctor first.