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While IgA1 predominates in serum (~80%), IgA2 percentages are higher in secretions than in serum (~35% in secretions); [10] the ratio of IgA1 and IgA2 secreting cells varies in the different lymphoid tissues of the human body: [11] IgA1 is the predominant IgA subclass found in serum. Most lymphoid tissues have a predominance of IgA1-producing ...
Hypergammaglobulinemia is a condition that is characterized by the increased levels of a certain immunoglobulin in the blood serum. [1] The name of the disorder refers to an excess of proteins after serum protein electrophoresis (found in the gammaglobulin region). [citation needed]
Serum protein electrophoresis (SPEP or SPE) is a laboratory test that examines specific proteins in the blood called globulins. [1] The most common indications for a serum protein electrophoresis test are to diagnose or monitor multiple myeloma , a monoclonal gammopathy of uncertain significance (MGUS), or further investigate a discrepancy ...
Total serum iron (TSI ... bicarbonate and base excess show a high level of inter-method reliability between ... Anti-phospholipid IgA < 10 [167] 10–20 [167 ...
ATA IgA are more frequently found in Celiac Disease (CD); however, ATA IgG are found in CD and at higher levels when affected individual had the IgA-less phenotype. The IgA-less phenotype is more common in CD than the normal population; however, one haplotype, DQ2.5 is found in most CD, has genetic linkage to the IgA-less gene location.
Normal total protein levels are not sufficient to rule out multiple myeloma or other malignant paraproteinemias, but they may also be the cause of moderate-to-marked hyperproteinemia. To determine the reason behind the elevated serum total protein, a serum protein electrophoresis should be carried out.
IgA antibodies are secreted in the respiratory or the intestinal tract and act as the main mediators of mucosal immunity. [13] They are monomeric in the serum, but appear as a dimer termed secretory IgA (sIgA) at mucosal surfaces. The secretory IgA is associated with a J-chain and another polypeptide chain called the secretory component. [14]
Depending on a clinical presentation, complete blood count, test for total serum immunoglobulins (IgG, IgA, IgM and subclass levels of IgG) and other tests are performed. If X-linked disease is suspected, carrier detection (in which at least half of mothers are usually expected to be carriers) could be accomplished. [ 5 ]
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