FRED ROSNER, M.D., F.A.C.P.
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To the editor: In their article describing a cobalt test for the detection of iron deficiency anemia (p. 181, August 1972), Drs. Valberg, Sorbie, Corbett, and Ludwig do not discuss a major drawback of the method. To obtain an adequate urine collection from an elderly, possibly incontinent, bedridden patient is a formidable task that requires the cooperation of several persons in addition to the patient. This is not always possible in a large municipal hospital such as ours.
Because of difficulties in proper urine collection, we have been forced to modify the commonly used Schilling test for diagnosis of pernicious
ROSNER F. Urine Cobalt in Iron Deficiency. Ann Intern Med. 1973;78:155–156. doi: 10.7326/0003-4819-78-1-155_2
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Published: Ann Intern Med. 1973;78(1):155-156.
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