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Albumin is an acute negative phase respondent and not a reliable indicator of nutrition status. [10] Low albumin levels can also indicate chronic malnutrition from protein losing enteropathy. [3] This is often caused or exacerbated by ulcerative colitis, [11] but can also be seen in cardiac disease and systemic lupus erythematosus. [3]
The serum-ascites albumin gradient or gap (SAAG) is a calculation used in medicine to help determine the cause of ascites. [1] The SAAG may be a better discriminant than the older method of classifying ascites fluid as a transudate versus exudate. [2] The formula is as follows: SAAG = (serum albumin) − (albumin level of ascitic fluid).
Concentrations below the reference range usually reflect low albumin concentration, for instance in liver disease or acute infection. Rarely, low total protein may be a sign of immunodeficiency. Concentrations above the reference range are found in paraproteinaemia, Hodgkin's lymphoma, leukaemia or any condition causing an increase in ...
Hypoalbuminemia means low blood albumin levels. [13] This can be caused by: Liver disease; cirrhosis of the liver is most common; Excess excretion by the kidneys (as in nephrotic syndrome) Excess loss in bowel (protein-losing enteropathy, e.g., Ménétrier's disease) Burns (plasma loss in the absence of skin barrier)
The 3D structure of human serum albumin has been determined by X-ray crystallography to a resolution of 2.5 ångströms (250 pm). [1] Albumin is a 65–70 kDa protein. Albumin comprises three homologous domains that assemble to form a heart-shaped protein. [2] Each domain is a product of two subdomains that possess common structural motifs. [2]
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 between a low albumin and a relatively high total protein.
The alpha globulins and the beta globulin are mainly created in the liver and the gamma globulin are made by lymphocytes and plasma cells in lymphoid tissue. These globulins should consist of non-albumin proteins and there could be about a hundred different proteins that are included in the globulins.
Hypoproteinemia is a condition where there is an abnormally low level of protein in the blood. There are several causes that all result in edema once serum protein levels fall below a certain threshold.