Biomarker
A measurable biological signal used to detect disease or predict treatment response.
What it is
A biomarker is a measurable sign in the body that can indicate the presence of a disease, such as cancer. It's like a warning signal that doctors can use to diagnose a condition or track how well a treatment is working. Biomarkers can be found in blood, urine, tissue, or other bodily fluids.
How it works
Biomarkers work by being present in higher or lower amounts in people with certain diseases. For example, a biomarker may be a protein that's produced by cancer cells, or a molecule that's broken down by the body in response to a tumor. Doctors can use tests to measure the levels of these biomarkers in a person's body fluids.
Why it matters
Understanding biomarkers is important because it can help doctors diagnose cancer and other diseases earlier, when they're easier to treat. Biomarkers can also help doctors choose the best treatment for a person and track how well that treatment is working. This can lead to better health outcomes and improved quality of life for people with cancer and other diseases.
This information is provided for general education only and is not medical advice. Always consult a qualified healthcare professional for guidance on your health.