<![CDATA[Congenital hypothyroidism is known to cause prolonged hyperbilirubinemia in neonates. It also correlates with delayedmaturation of the activity of the uridine diphosphate glucoronosyltransferase (UDPG-T) enzyme. Thus, this study wasperformed to analyze the correlation of TSH and FT4 levels with serum bilirubin in neonatal jaundice. This observationalanalytical study with a cross-sectional approach was conducted on 64 neonatal patients with jaundice in Dr. MoewardiGeneral Hospital, Surakarta during September-November 2019. The data comparison and correlation were analyzed withMann-Whitney and the Spearman test. A p-value of < 0.05 was considered significant with 95% Confidence Interval (CI). Thestudy variables comprised of total bilirubin of 12.7 (6.28-23.5) mg/dL, direct bilirubin of 0.8 (0.30-6.61) mg/dL, indirectbilirubin of 11.87 (3.16-22.94) mg/dL, TSH of 4.4 (0.40-23.06) uIU/L, and FT4 of 22.85±7.4 pmol/L. The TSH and FT4 weremoderately correlated with total bilirubin r=-0.444; p=0.001 and r= -0.467; p=0.001), with indirect bilirubin (r= -0.3362;p=0.03 and r=-0.411; p=0.001) and with direct bilirubin (r= -0.257; p=0.040 and r=0.232; p=0.065), respectively. A moderatecorrelation of TSH and FT4 with total and indirect bilirubin, as well as a weak correlation between TSH and direct bilirubinwere found, while no correlation was found between FT4 and with direct bilirubin. Thyroid function screening isrecommended in neonates with jaundice, due to the importance of thyroid hormones in the function and formation oforgans ]]>
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