Liquid biopsy is a non-invasive medical test that looks for cancer-related material in body fluids, most commonly blood, instead of removing tissue through surgery or a needle biopsy.
Because every cancer behaves differently, even if they are the same type.
A tissue biopsy takes a piece of tumor, while a liquid biopsy only needs a blood sample.
No. It is usually just a normal blood draw.
Patients before treatment, during treatment, or after treatments stop working may consider it.
It can help show how the cancer is behaving and how it may respond to treatments.
CTCs are circulating tumor cells—whole cancer cells that move from the tumor into the blood.
A CTC test looks for and analyzes cancer cells in the bloodstream.
Yes. They may help explain why a treatment is failing and what to do next.
Yes. It can be repeated to monitor changes over time.
Yes, especially when repeat tissue biopsy is difficult or risky.
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