A patient who had a Schilling test shows a 20% excretion of the radioactive vitamin B12. What would this indicate?
a. The patient has a low reserve of iron and has iron deficiency anemia.
b. The patient has a normal finding and does not have pernicious anemia. c.
The patient has a deficiency of thrombocytes and has a clotting disorder.
d. The patient has an excess of RBCs and has polycythemia.
ANS: B
The Schilling test is a laboratory blood test for diagnosing pernicious anemia. The normal reading 24 hours after the administration of radioactive vitamin B12 is 8% to 40%. The test measures the absorption of radioactive vitamin B12.
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