Schilling test(redirected from Shillings test)
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a test for gastrointestinal absorption of vitamin B12; a measured amount of radioactive vitamin B12 (cyanocobalamin Co 57) is given orally, followed by a parenteral flushing dose of the nonradioactive vitamin, and the percentage of radioactivity is determined in the urine excreted over a 24-hour period. A low urinary excretion that becomes normal after the test is repeated with intrinsic factor is diagnostic of primary pernicious anemia.
a procedure for determining the amount of vitamin B12 excreted in the urine using cyanocobalamin tagged with a radioisotope of cobalt.
Schilling testVitamin B12 absorption test A test that evaluates ability to absorb vitamin B12, which is ↓ without intrinsic factor, a glycoprotein produced by the gastric parietal cells. See Vitamin B12 deficiency.
Schil·ling test(shil'ing test)
A procedure for determining the amount of vitamin B12 excreted in the urine, using cyanocobalamin tagged with a radioisotope of cobalt.
Schilling testA test to demonstrate the failure of absorption of vitamin B12 due to a lack of stomach INTRINSIC FACTOR. The test is used in the investigation of PERNICIOUS ANAEMIA. Cobalt 57 radiolabelled B12 is given by mouth and the amount excreted in the urine over the following 24 hours is an indication of the degree of absorption. (Victor Theodore Schilling, 1883–1960, German haematologist)
Schilling,Robert F., U.S. hematologist, 1919–.
Schilling test - a procedure for determining the amount of B12 excreted in the urine. Synonym(s): vitamin B12 absorption test