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Normal adult levels typically fall between 20 and 40 mg/dL, though these values fluctuate significantly in pediatric and geriatric populations. Challenges in Measurement

Ceruloplasmin is a vital ferroxidase enzyme synthesized primarily in the liver. It carries about 95% of the copper found in human plasma. Measuring its levels is a cornerstone of clinical diagnostics, particularly for identifying Wilson disease and monitoring systemic inflammation. This essay explores the clinical significance, laboratory methodologies, and diagnostic utility of quantifying human serum ceruloplasmin. Biological and Clinical Significance

Ceruloplasmin plays a dual role in human physiology. As a transport protein, it regulates the distribution of copper throughout the body. More critically, its ferroxidase activity facilitates the oxidation of ferrous iron (Fe2+) to ferric iron (Fe3+). This conversion is essential for loading iron onto transferrin, allowing for safe transport through the bloodstream.

Clinically, low levels of ceruloplasmin are the primary hallmark of Wilson disease, a genetic disorder leading to toxic copper accumulation in the brain and liver. Conversely, because ceruloplasmin is an acute-phase reactant, elevated levels are often observed during pregnancy, oral contraceptive use, or chronic inflammatory states such as rheumatoid arthritis and certain malignancies. Laboratory Methodology