Ceruloplasmin analysis in serum (Ceruloplasmin, Serum) is a laboratory test used to measure the level of ceruloplasmin in the blood. Ceruloplasmin is a copper-containing protein that plays a key role in transporting and regulating copper in the body. This test is useful for diagnosing and monitoring copper metabolism disorders, such as Wilson's disease, which causes copper accumulation in tissues. It is also used to assess the presence of chronic infections or liver diseases that may affect ceruloplasmin levels.