Reference Values For Triiodothyronine, total in Pregnancy

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Reference Values During Pregnancy

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Triiodothyronine, total , T₃ (serum)

Units	Nonpregnant Adult	First Trimester	Second Trimester	Third Trimester
ng/dL	77-135	97-149	117-169	123-162
nmol/L	1.19-2.08	1.49-2.29	1.8-2.6	1.89-2.29

References:
1. Abbassi-Ghanavati M, Greer LG, Cunningham FG. Pregnancy and laboratory studies: a reference table for clinicians. Obstet Gynecol. 2009 Dec;114(6):1326-31. PMID: 19935037
2. Kratz A, Ferraro M, Sluss PM, Lewandrowski KB. Laboratory reference values. N Engl J Med. 2004;351(15):1548-15632. PMID:15470219