Cyfra-21-1 Antibodies and Antigens
CYFRA 21-1 is a tumor marker that measures fragments of cytokeratin 19, primarily used in the diagnosis and management of non-small cell lung cancer (NSCLC), especially the squamous cell subtype. Elevated levels of CYFRA 21-1 in serum have been associated with advanced disease stages and may indicate a poorer prognosis.
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