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Falsely low serum thyroxine levels caused by interference with the thyroxine assay
M H Stehouwer1, C D Stehouwer, W H Hackeng
1Department of Internal Medicine, Bergweg Municipal Hospital, Rotterdam, The Netherlands.
The Netherlands Journal of Medicine
|August 1, 1991
Abstract:
A case of euthyroid hypothyroxinaemia caused by the interference of the patient's serum with the Abbott thyroxine TDx assay is reported. This cause of falsely low serum thyroxine levels is probably rare but possibly underrecognized. Clinical implications are discussed.