Initial screening for hereditary hemochromatosis in individuals with persistent abnormal liver tests involves measurement of which parameters?

Initial screening for hereditary hemochromatosis in individuals with persistent abnormal liver tests involves measurement of which parameters?

• A. Iron and transferrin saturation
• B. Ferritin and transferrin saturation
• C. Iron and ferritin
• D. Transferrin saturation and ferritin

Answer: (A)

The key idea is detecting iron overload efficiently. Transferrin saturation rises early in hereditary hemochromatosis and directly reflects how much iron is bound to transferrin, making it the most useful initial screen in this setting. Measuring serum iron to compute transferrin saturation provides the best balance of sensitivity and specificity when liver tests are persistently abnormal. Ferritin, while helpful in some contexts, is an acute-phase reactant and can be elevated for many reasons besides iron overload (inflammation, liver disease, obesity, alcohol use), so relying on ferritin alone can be misleading. Therefore, assessing iron and calculating transferrin saturation is the most appropriate initial approach, with elevated results prompting confirmatory genetic testing for HFE mutations.

The key idea is detecting iron overload efficiently. Transferrin saturation rises early in hereditary hemochromatosis and directly reflects how much iron is bound to transferrin, making it the most useful initial screen in this setting. Measuring serum iron to compute transferrin saturation provides the best balance of sensitivity and specificity when liver tests are persistently abnormal. Ferritin, while helpful in some contexts, is an acute-phase reactant and can be elevated for many reasons besides iron overload (inflammation, liver disease, obesity, alcohol use), so relying on ferritin alone can be misleading. Therefore, assessing iron and calculating transferrin saturation is the most appropriate initial approach, with elevated results prompting confirmatory genetic testing for HFE mutations.