Gastric dumping syndrome laboratory findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Umar Ahmad, M.D.[2]

Overview

There are no diagnostic laboratory findings that help in diagnosing dumping syndrome but there are associated laboratory finding that may present if severe.

Laboratory Findings

There are no diagnostic laboratory findings associated with dumping syndrome that help in establishing a diagnosis. People with severe malnutrition due to dumping syndrome may often suffer from:

Laboratory finding	Cause
Anemia	The severe symptoms cause the patient to cut down on food to reduce symptoms this in turn makes them lose weight and become malnutritioned.
Hypoglycemia	This is usually due to an exaggerated insulin release or from the cutting down of the intake of food.
Hypoalbuminemia	The severe symptoms cause the patient to cut down on food to reduce symptoms this in turn makes them lose weight and become malnutritioned.
Elevated hematocrit	The fluid shift from the intravascular compartment to the lumen of the gut causes the blood vessels to dehydrate.

Low blood sugar has little clinical significance alone but is better when used in conjunction with the symptoms of late dumping syndrome. The table below describes blood glucose measurements.

Blood glucose measurements
Plasma glucose is measured. (There is no discrimination between a scheduled and a random glucose draw) There is controversy between the cutoff value of plasma sugar as to what is considered hypoglycemic. Considerations range from <2.8 mmol/L (50 mg/dL) to <3.3 mmol/L (60 mg/dL).  Capillary glucose is not favored because it lacks accuracy.