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5-HIAA, Plasma
Use: Plasma 5-hydroxy-indoleacetic acid (5HIAA or 5-HIAA) is a metabolite of serotonin that can be elevated as a result of carcinoid tumors/carcinoid syndrome. Limitations: This test was developed and its performance characteristics determined by LabCorp. It has not been cleared...
View Lab Test5-Hydroxyindoleacetic Acid (HIAA), Quantitative, 24-Hour Urine
Levels of 5-HIAA may not be elevated in nonfunctional tumors. Because flushing is mediated by different hormones in foregut and midgut tumors, some patients with a neuroendocrine tumors will have symptoms of flushing with low or normal levels of 5-HIAA. A number of substanc...
View Lab Test5-Hydroxyindoleacetic Acid (HIAA), Quantitative, Random Urine (Pediatric)
A serotonin analysis is most frequently performed for the diagnosis of carcinoid tumors of the enterochromaffin (Kultschitzsky) cells of the small intestine. These tumor cells release large amounts of serotonin, which can produce the clinical syndrome of flushing, diarrhea...
View Lab Test5' Nucleotidase
5' nucleotidase is used to investigate the origin of increased serum alkaline phosphatase. It is a liver-related enzyme used to work up cholestatic/biliary obstruction. It parallels the increases of alkaline phosphatase and leucine aminopeptidase in hepatobiliary diseases, but is...
View Lab Test7AlphaC4 (7 alpha-hydroxy-4-cholesten-3-one) (520550)
Use: Serum 7AlphaC4 is a surrogate measure of stool bile acids (BA) and elevated levels may be diagnostic for bile acid malabsorption (BAM), also known as bile acid diarrhea (BAD). Limitations: Please note that this 7AlphaC4 test is for Bile Acid Malabsorption/Diarrhea...
View Lab Test88 Food Allergy and Sensitivity TEST (FAST) (IgG, C3d/C3b, IgE, IgG4) and Antigen IgE Environmental Allergy - DBS
This test combines the 88 Food Allergy and Sensitivity Test (FAST) and the 88 Antigen IgE Environmental Allergy Test. It measures four distinct immune reactions (IgE, IgG, IgG4, and complement C3b/d) to 88 common food antigens and IgE reactions to 88 common environmental allergen...
View Lab Test88 Food Allergy and Sensitivity TEST (FAST) (IgG, C3d/C3b, IgE, IgG4) and Antigen IgE Environmental Allergy - Serum
This test combines the 88 Food Allergy and Sensitivity Test (FAST) and the 88 Antigen IgE Environmental Allergy Test. It measures four distinct immune reactions (IgE, IgG, IgG4, and complement C3b/d) to 88 common food antigens and IgE reactions to 88 common environmental allergen...
View Lab Test88 Food Allergy and Sensitivity TEST (FAST) (IgG, C3d/C3b, IgE, IgG4) - DBS
Various Antibodies and Their MeaningIgE (immunoglobulin E) allergies are the immediate responses to a foreign substance that has entered the body via food or inhalation. IgE allergies can cause very serious symptoms like difficulty in breathing, swelling, and hives. In more ser...
View Lab Test88 Food Allergy and Sensitivity TEST (FAST) (IgG, C3d/C3b, IgE, IgG4) - Serum
Various Antibodies and Their MeaningIgE (immunoglobulin E) allergies are the immediate responses to a foreign substance that has entered the body via food or inhalation. IgE allergies can cause very serious symptoms like difficulty in breathing, swelling, and hives. In more ser...
View Lab Test88 Food Antigen IgE
Various Antibodies and Their MeaningIgE (immunoglobulin E) allergies are the immediate responses to a foreign substance that has entered the body via food or inhalation. IgE allergies can cause very serious symptoms like difficulty in breathing, swelling, and hives. In more ser...
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