Which enzyme is commonly used as a tumor marker among the following?

Which enzyme is commonly used as a tumor marker among the following?

• A. LD
• B. Lipase
• C. Aldolase
• D. Catalase

Answer: (A)

Tumor markers are substances that can rise when cancer is present, often reflecting tumor burden or tissue turnover. Among the enzymes listed, lactate dehydrogenase is the one routinely used as a tumor marker because its level tends to increase with many cancers and roughly tracks disease activity and prognosis. Clinically, LDH can help monitor response to therapy and detect progression in various malignancies. Lipase targets pancreatic injury, aldolase is more associated with muscle damage or certain metabolic issues, and catalase is a general antioxidant enzyme not used for cancer monitoring. So lactate dehydrogenase best fits as a commonly used tumor marker among these options.

Tumor markers are substances that can rise when cancer is present, often reflecting tumor burden or tissue turnover. Among the enzymes listed, lactate dehydrogenase is the one routinely used as a tumor marker because its level tends to increase with many cancers and roughly tracks disease activity and prognosis. Clinically, LDH can help monitor response to therapy and detect progression in various malignancies. Lipase targets pancreatic injury, aldolase is more associated with muscle damage or certain metabolic issues, and catalase is a general antioxidant enzyme not used for cancer monitoring. So lactate dehydrogenase best fits as a commonly used tumor marker among these options.