Indonesian Society of Obstetrics and Gynecology Pengarang

Abstract Objective: To determine the relationship between serum vitamin D levels in third trimester mothers and newborn birthttweight. Method: The study was conducted at the maternity ward of Dr. Zainoel Abidin General Hospital in Banda Aceh, Indonesia. Maternal and infant serum vitamin D levels were measured using the Automatic Chemiluminescence Immunoassay Analyzer (CLIA) method. Blood samples were collected from mothers in the third trimester and from infants after delivery. Spearman's correlation rank test was employed with a con fi dence level of 95%. Vitamin D levels were categorized as suf fi cient, insuf fi cient, and de fi cient. Results: A total of 39 pregnant women with an average age of 30.38 ± 6.21 years participated in the study, with a predominance of 38-39 weeks of gestation (35.9%). The mean vitamin D levels in mothers and neonates were 17.4 ng/mL and 17.6 ng/mL, respectively (p = 0.003, R = 0.462). The average birth weight of the babies was 3,100 grams, ranging from 2,100 grams to 4,200 grams (p = 0.185, R = 0.217). Both variables showed a positive correlation with varying strength of the relationship.