Objective: To determine second trimester reference intervals for TSH and FT4. Design: Samples from 3102 subjects were tested for TPO and Tg antibodies. Methods: Elecsys E170 reference intervals for TSH and FT4 were determined using antibody-negative samples. Results: Second trimester reference intervals for TSH and FT4 were 0.18-4.07 mIU/L and 9.5-15.8 pmol/L, respectively. The Elecsys E170 TSH results were positively biased compared to ARCHITECT i2000SR results for these same samples. Conclusions: Method-specific reference intervals are required for TSH and FT4. © 2008 The Canadian Society of Clinical Chemists.
Bibliographical noteGenerated from Scopus record by KAUST IRTS on 2023-09-20
ASJC Scopus subject areas
- Clinical Biochemistry