In normal serum, about 15% is IgA. Monoclonal gammopathies of all types may lead to a spike in the gamma globulin zone seen on serum protein electrophoresis. Monoclonal elevations of IgA characterize multiple myeloma.

This lab test measures the types of protein in the fluid (serum) part of a blood sample. This fluid is called serum. Blood is drawn from a vein (venipuncture), usually from the inside of the elbow or the back of the hand.

We measured serum IgA levels and sIgA concentrations in the bronchial lavages of patients with chronic bronchitis (n = 10), bronchiectasis (n = 15), lung cancer (n = 15) and in healthy control subjects (n = 10).

Serum (/ ˈ s ɪər ə m /) is the fluid and solvent component of blood which does not play a role in clotting. [1] It may be defined as blood plasma without the clotting factors , or as blood with all cells and clotting factors removed.

IgA from human serum has been used in enzyme-linked immunosorbent assay (ELISA) for anti-severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-spike-receptor binding domain (RBD) antibody detection in blood samples.

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Measuring IgA anti-Saccharomyces cerevisiae antibodies as a part of a profile to aid in distinguishing between ulcerative colitis and Crohn disease in patients for whom the specific diagnosis is unclear based on endoscopic, pathologic, and imaging evaluations.

Laboratory test results may vary depending on your age, gender, health history, the method used for the test, and many other factors. If your results are different from the results suggested below, this may not mean that you have a disease. Contact your healthcare worker if …

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