FRED ROSNER, M.D., F.A.C.P.
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
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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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