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Correspondence
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Volume 348:1931-1932 May 8, 2003 Number 19
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Easy to See but Hard to Find

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 by Reilly, B. M.
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To the Editor: The clinical problem that was easy to see (Jan. 2 issue)1 could have been less hard to find if the diagnostic approach had been slightly different. When myeloma is likely, the first step should be to look for a paraprotein. Serum and an aliquot from a 24-hour urine collection should be subjected to immunofixation because small quantities of paraprotein may be missed on gel electrophoresis2 and because analysis of a random urine sample may not reveal paraprotein. A new serum free-light-chain assay may detect paraprotein in instances in which the results of immunofixation are negative.3

Marrow infiltration . . . [Full Text of this Article]


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