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Falsely Undetectable Tsh in a Euthyroid Patient Publisher



Rahimkhani M1 ; Kazemian K2 ; Daryasari RR2
Authors
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Authors Affiliations
  1. 1. Department of Lab Medical Sciences, Faculty of Allied Medical Sciences, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Al-mahdi Clinic, Tehran University of Medical Sciences, Tehran, Iran

Source: Thyroid Research Published:2020


Abstract

Background: Measuring thyroid hormone levels is essential and helpful in the diagnosis of thyroid diseases. Case presentation: We had a patient with undetectable serum TSH level by the Siemens immunoassay, whereas by ELISA and Roche-Abott immunoassay, serum level of TSH was in the normal range. Conclusion: If the result of TSH level revealed very low or undetectable through one specific method, it should not be considered necessarily as a symptom of hyperthyroidism. It is to be requested to measure by the other methods with other devices too. © 2020 The Author(s).