2006-12-11 09:13:27 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Biology
Normal nutrient absorbency value for blood are determined by a Xylose tolerance test.
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Normal Values
The value varies depending on the amount of D-xylose administered. Usually the test is registered as either positive or negative. Positive indicates that D-xylose is found in the blood and/or urine and is therefore being absorbed by the intestines.
blood: greater than 25 mg/dl (milligrams per deciliter) at 2 hours after ingestion
urine: greater than 16% of ingested dose excreted within 5 hours of ingestion
What abnormal results mean
Lower than normal values may be seen in:
* Crohn's disease
* Giardia lamblia infestation
* hookworm infestation
* lymphatic obstruction
* radiation enteropathy
* small intestinal bacterial overgrowth
* celiac disease (sprue)
* viral gastroenteritis
2006-12-12 16:49:46 · answer #1 · answered by john h 7 · 0⤊ 0⤋
Absorbance value of what? Oxygen? Zinc? My dinner?
2006-12-12 19:48:14 · answer #2 · answered by Science nerd 3 · 0⤊ 0⤋