Omega Genetik
All Episodes

cfDNA and Methylation: the Story Blood Tells

05.10.2026 16 min

An episode that makes molecular biology explainable at the kitchen table.

The audio for this episode is coming soon.

This episode may have been prepared with AI assistance; it may contain gaps or phrasing errors. It is for general information only and does not constitute medical advice. For your health decisions, please consult your physician or the Omega Genetik center.

About the Episode

Every cell that dies in your body releases DNA fragments into the blood — this is cell-free DNA (cfDNA). Cancer cells add their own methylation marks to it. This episode explains what methylation is, why it is an 'early and tissue-specific' signal, and how laboratories read these marks — with relatable examples.

This background prepares the ground for understanding methylation-based tests such as Galleri® and OverC®.

#genel #bilim

Rx-only — prescription screening test. Galleri® is not a diagnostic test. A positive result does not mean a cancer diagnosis; a negative result does not rule out cancer. The test does not replace the routine cancer screenings recommended by your physician. Galleri® does not detect all cancers.

Get Information