1 Casey BM, Thom EA, Peaceman AM, Varner MW, Sorokin Y, Hirtz DG, et al. Treatment of Subclinical Hypothyroidism or Hypothyroxinemia in Pregnancy. N Engl J Med. 2017;376(9):815-825.
2 Stagnaro-Green A, Abalovich M, Alexander E, Azizi F, Mestman J, Negro R, et al. Guidelines of the American Thyroid Association for the diagnosis and management of thyroid disease during pregnancy and postpartum. Thyroid. 2011;21(10):1081-1125.
3 Elhaj ET, Adam I, Ahmed MA, Lutfi MF. Trimester-specific thyroid hormone reference ranges in Sudanese women. BMC Physiol. 2016;16(1):5.
4 Liu J, Yu X, Xia M, Cai H, Cheng G, Wu L, et al. Development of gestation-specific reference intervals for thyroid hormones in normal pregnant Northeast Chinese women: What is the rational division of gestation stages for establishing reference intervals for pregnancy women? Clin Biochem. 2017;50(6):309-317.
5 Maji R, Nath S, Lahiri S, Saha Das M, Bhattacharyya AR, Das HN. Establishment of Trimester-Specific Reference Intervals of Serum TSH & fT4 in a Pregnant Indian Population at North Kolkata. Indian J Clin Biochem. 2014;29(2):167-173.
6 McLeod DS, Cooper DS, Ladenson PW, Whiteman DC, Jordan SJ. Race/Ethnicity and the prevalence of thyrotoxicosis in young Americans. Thyroid. 2015;25(6):621-628.
7 Ryckman KK, Spracklen CN, Dagle JM, Murray JC. Maternal factors and complications of preterm birth associated with neonatal thyroid stimulating hormone. J Pediatr Endocrinol Metab. 2014;27(9-10):929-938.
8 Solanki A, Bansal S, Jindal S, Saxena V, Shukla US. Relationship of serum thyroid stimulating hormone with body mass index in healthy adults. Indian J Endocrinol Metab. 2013;17(Suppl 1):S167-S169.
9 Yan YQ, Dong ZL, Dong L, Wang FR, Yang XM, Jin XY, et al. Trimester- and method-specific reference intervals for thyroid tests in pregnant Chinese women: methodology, euthyroid definition and iodine status can influence the setting of reference intervals. Clin Endocrinol (Oxf). 2011;74(2):262-269.
10 Rajput R, Singh B, Goel V, Verma A, Seth S, Nanda S. Trimester-specific reference interval for thyroid hormones during pregnancy at a Tertiary Care Hospital in Haryana, India. Indian J Endocrinol Metab. 2016;20(6):810-815.
11 Alexander EK, Pearce EN, Brent GA, Brown RS, Chen H, Dosiou C, et al. 2017 Guidelines of the American Thyroid Association for the Diagnosis and Management of Thyroid Disease During Pregnancy and the Postpartum. Thyroid. 2017;27(3):315-389.
12 Liu C, Luo D, Wang Q, Ma Y, Ping L, Wu T, et al. Serum homocysteine and folate concentrations in early pregnancy and subsequent events of adverse pregnancy outcome: the Sichuan Homocysteine study. BMC Pregnancy Childbirth. 2020;20(1):176.
13 Lv YB, Yuan JQ, Mao C, Gao X, Yin ZX, Kraus VB, et al. Association of Body Mass Index With Disability in Activities of Daily Living Among Chinese Adults 80 Years of Age or Older. JAMA Netw Open. 2018;1(5):e181915.
14 Chen C, Lu FC, Department of Disease Control Ministry of Health, PR China. The guidelines for prevention and control of overweight and obesity in Chinese adults. Biomed Environ Sci. 2004;17 Suppl:1-36.
15 Joint Committee for Developing Chinese guidelines on Prevention and Treatment of Dyslipidemia in Adults. Chinese guidelines on prevention and treatment of dyslipidemia in adults. Zhonghua Xin Xue Guan Bing Za Zhi. 2007;35(5):390-419.
16 Sibartie P, Quinlivan J. Implementation of the International Association of Diabetes and Pregnancy Study Groups Criteria: Not Always a Cause for Concern. J Pregnancy. 2015;2015:754085.
17 Liu C, Luo D, Wang Q, Ma Y, Ping L, Wu T, et al. Serum homocysteine and folate concentrations in early pregnancy and subsequent events of adverse pregnancy outcome: the Sichuan Homocysteine study. BMC Pregnancy Childbirth. 2020;20(1):176.
18 Solberg HE. The theory of reference values Part 5. Statistical treatment of collected reference values. Determination of reference limits. J Clin Chem Clin Biochem. 1983;21(11):749-760.
19 Kostecka-Matyja M, Fedorowicz A, Bar-Andziak E, Bednarczuk T, Buziak-Bereza M, Dumnicka P, et al. Reference Values for TSH and Free Thyroid Hormones in Healthy Pregnant Women in Poland: A Prospective, Multicenter Study. Eur Thyroid J. 2017;6(2):82-88.
20 Zhang M, Shi L. A clinical interpretation of 2012 Chinese guidelines for the diagnosis and treatment of thyroid disease during pregnancy and postpartum. Chinese Journal of Practical Internal Medicine. 2012; 32(10): 761-763.
21 Weeke J, Dybkjaer L, Granlie K, Eskjaer Jensen S, Kjaerulff E, Laurberg P, et al. A longitudinal study of serum TSH, and total and free iodothyronines during normal pregnancy. Acta Endocrinol (Copenh). 1982;101(4):531-537.
22 Glinoer D. The regulation of thyroid function in pregnancy: pathways of endocrine adaptation from physiology to pathology. Endocr Rev. 1997;18(3):404-433.
23 Lockwood CM, Grenache DG, Gronowski AM. Serum human chorionic gonadotropin concentrations greater than 400,000 IU/L are invariably associated with suppressed serum thyrotropin concentrations. Thyroid. 2009;19(8):863-868.
24 Haddow JE, Knight GJ, Palomaki GE, McClain MR, Pulkkinen AJ. The reference range and within-person variability of thyroid stimulating hormone during the first and second trimesters of pregnancy. J Med Screen. 2004;11(4):170-174.
25 Panesar NS, Li CY, Rogers MS. Reference intervals for thyroid hormones in pregnant Chinese women. Ann Clin Biochem. 2001;38(Pt 4):329-332.
26 Li C, Shan Z, Mao J, Wang W, Xie X, Zhou W, et al. Assessment of thyroid function during first-trimester pregnancy: what is the rational upper limit of serum TSH during the first trimester in Chinese pregnant women? J Clin Endocrinol Metab. 2014;99(1):73-79.
27 Moon HW, Chung HJ, Park CM, Hur M, Yun YM. Establishment of trimester-specific reference intervals for thyroid hormones in Korean pregnant women. Ann Lab Med. 2015;35(2):198-204.
28 Han L, Zheng W, Zhai Y, Xie X, Zhang J, Zhang S, et al. Reference intervals of trimester-specific thyroid stimulating hormone and free thyroxine in Chinese women established by experimental and statistical methods. J Clin Lab Anal. 2018;32(4):e22344.