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The fecal elastase test measures the concentration of the elastase-3B enzyme found in fecal matter with an enzyme-linked immunosorbent assay . Results of this test can give a good indication of exocrine pancreatic status, and the test is less invasive and expensive than the current "gold standard", secretin-cholecystokinin test. [9] Levels of ...
The gene that codes for pancreatic elastase 1 is CELA1 (synonym: ELA1) Pancreatic elastase 1 is encoded by a single genetic locus on chromosome 12. Studies of human pancreatic elastase 1 have shown that this serine protease maps to the chromosomal region 12q13 [ 10 ] and it is close to a locus for an autosomal dominant skin disease, Diffuse ...
The latter is a less used test that assesses exocrine function in the pancreas by inserting a tube into the small intestine to collect pancreatic secretions. The fecal elastase test is a less cumbersome test that has replaced the 72-hour fecal fat test; in the fecal elastase test, pancreatic enzyme replacement therapy (enzyme supplementation ...
Exocrine pancreatic insufficiency can be confirmed by also checking a fecal elastase level, with low levels specifying exocrine pancreatic insufficiency. [3] A quantitative fecal fat test can also be done to quantify the fat levels in the stool and confirm the presence of exocrine pancreatic insufficiency. [3]
However, both enzymes can be elevated in other disease states. In chronic pancreatitis, the fecal pancreatic elastase-1 (FPE-1) test is a marker of exocrine pancreatic function. Additional tests that may be useful in evaluating chronic pancreatitis include hemoglobin A1C, immunoglobulin G4, rheumatoid factor, and anti-nuclear antibody. [32]
However, CF can be excluded with a normal chloride in sweat test but faecal elastase as a marker of pancreatic function will be reduced. The variation, intermittent nature, and potential for long-term improvement of some clinical features make this syndrome difficult to diagnose. SDS may present with either malabsorption, or hematological ...
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