Home / Blood Tests / Cytokeratin-19 Fragments (CYFRA 21.1)

Cytokeratin-19 Fragments (CYFRA 21.1)

CYFRA 21-1 is a tumor marker used to diagnose and monitor certain types of cancer, especially lung cancer. It is a protein that is shed by cancer cells and can be detected in the blood. CYFRA 21-1 testing is often used in combination with other tests, such as chest X-rays, CT scans, and bronchoscopy, to aid in the diagnosis of lung cancer, especially non-small cell lung cancer (NSCLC). It may also be used to monitor the response to treatment and to detect cancer recurrence. However, it is important to note that CYFRA 21-1 can also be elevated in other conditions, such as chronic obstructive pulmonary disease (COPD), interstitial lung disease, and kidney disease. Therefore, elevated levels of CYFRA 21-1 alone are not enough to diagnose cancer and must be interpreted in the context of other diagnostic tests and clinical findings.

There is an additional £20 phlebotomy fee for every donation.