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Updated: Jul 29, 2026

Biochemical Measurement of Neonatal Hypoxia
Published on: August 24, 2011
Diurnal variation in serum bilirubin concentrations in infants with neonatal jaundice
1Department of Pediatrics, Tel-Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Israel.
Abstract:
We investigated whether there are independent intradaily changes in bilirubin levels in neonates. Healthy term newborn infants (n = 124) with neonatal jaundice bilirubin >/t171 mmol/L (10mg/dl) were studied for at least 3 consecutive days. Starting from the second day of life, consistent intradaily changes were observed in bilirubin levels (morning levels were greater than evening levels; p < 0.001), and body weight steadily increased. This diurnal variation in bilirubin levels should be considered in the follow-up and treatment of neonatal jaundice.
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