Carbohydrate Antigen (CA 72-4), Serum analysis is a laboratory test mainly used as a biomarker to evaluate certain types of cancers, such as stomach and ovarian cancer. CA 72-4 is a protein produced in higher amounts in tumor conditions, making it a useful tool for disease diagnosis and monitoring its progression. This test is performed by taking a blood sample to measure CA 72-4 levels. Elevated levels may indicate the presence of cancer or other pathological conditions. The analysis helps physicians assess treatment response and adjust therapy doses, contributing to improved patient care. By monitoring CA 72-4 levels, disease management can be enhanced and the chances of successful treatment increased.