Cyfra 21-1 test
What is the Cyfra 21-1 test? The Cyfra 21-1 is a blood test to measure levels of Cyfra 21-1. CYFRA 21-1 is a tumor marker that is used to help diagnose and monitor lung cancer, especially non-small cell lung cancer (NSCLC). Cyfra 21-1 is a fragment of cytokeratin 19, a protein that is found in … Read more