Thyroid Hormone reference intervals for autoantibody-negative pregnancies Non-pregnant Hormone First Trimester Second Trimester Third Trimester adult female TSH 0.02-2.69 mIU/L1 0.15-3.11 mIU/L2 0.31 2.90 mU/L3 0.45-4.5 mIU/L – Free T4 0.88 1.44 ng/dL1 0.72–1.18ng/dL2 0.67 1.08 ng/dL3 0.7-1.5 ng/dL – – 2.60 4.20 2.48 pg/mL 2.16 3.63 – –3.87 – Free T3 2.3-4.2 pg/mL pg/mL1 2 pg/mL3 Total T4 5.7-12.8 µg/dL4 7.0 µg/dL4 6.5-13.2 µg/dL4 4.9-11.7 µg/dL –13.6 Total T3 78-169 ng/dL4 98–195 ng/dL4 91-188 ng/dL4 58-159 ng/dL 1La’ulu, SL and Roberts, WL Clin Chem (2011) 57:913-915 2La’ulu, SL and Roberts, WL Clin Chem (2007) 53:1658-1664 3Stricker, Rt et al. Europ J Endo (2007) 157:509-514 4Shen et al. Clin Biochem (2014) 47:673-675
Thyroid Hormone reference intervals for autoantibody-negative pregnancies Hormone First Trimester Second Trimester Third Trimester Non-pregnant adult female TSH 0.02-2.69 mIU/L1 0.15-3.11 mIU/L2 0.31 – 2.90 mU/L3 0.45-4.5 mIU/L Free T4 0.88 – 1.44 ng/dL1 0.72–1.18ng/dL2 0.67 – 1.08 ng/dL3 0.7-1.5 ng/dL Free T3 2.60 – 4.20 pg/mL1 2.48 –3.87 pg/mL 2 2.16 – 3.63 pg/mL3 2.3-4.2 pg/mL Total T4 5.7-12.8 µg/dL4 7.0 –13.6 µg/dL4 6.5-13.2 µg/dL4 4.9-11.7 µg/dL Total T3 78-169 ng/dL4 98–195 ng/dL4 91-188 ng/dL4 58-159 ng/dL 1La’ulu, SL and Roberts, WL Clin Chem (2011) 57:913-915 2La’ulu, SL and Roberts, WL Clin Chem (2007) 53:1658-1664 3Stricker, Rt et al. Europ J Endo (2007) 157:509-514 4Shen et al. Clin Biochem (2014) 47:673-675
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