Vitamin B12 absorption and malabsorption.

Nonradioactive vitamin B12 absorption test evaluated in controls and in patients with inherited malabsorption of vitamin B12.

BACKGROUND Current tests for evaluation of vitamin B(12) absorption are problematic because they involve the use of radioactively labeled vitamin B(12). We describe a vitamin B(12) absorption test that circumvents this problem. METHODS We measured cobalamin or transcobalamin saturated with cobalamin (holo-TC) 24 h after three 9-microg doses of vitamin B(12) given orally at 6-h intervals. We s...

Familial selective malabsorption of vitamin B12.

Carbachol and Vitamin B12 Absorption.

Vitamin B 12 absorption and malabsorption.

Granulomatous gastritis, iron deficiency, vitamin B12 malabsorption and immunoglobulin deficiency.

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