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Updated: May 12, 2026

Biochemical Measurement of Neonatal Hypoxia
Published on: August 24, 2011
Glucose-6-phosphate dehydrogenase deficiency in neonatal hyperbilirubinaemia: Hacettepe experıence
H Tolga Celik1, Ceren Günbey, Sule Unal
1Section of Neonatology, Department of Pediatrics, Hacettepe University, Ankara, Turkey. htcelik@yahoo.com
Insights
Glucose-6-phosphate dehydrogenase (G6PD) deficiency affects 1.12% of newborns with hyperbilirubinaemia. G6PD-deficient infants showed higher rates of exchange transfusion, indicating a need for targeted G6PD testing.
Area of Science:
- Neonatal Medicine
- Clinical Genetics
- Pediatric Hematology
Background:
- Neonatal hyperbilirubinaemia is a common condition in newborns.
- Glucose-6-phosphate dehydrogenase (G6PD) deficiency is a genetic disorder affecting red blood cells.
Purpose of the Study:
- To determine the prevalence of G6PD deficiency in neonates with hyperbilirubinaemia.
- To compare clinical characteristics between G6PD-deficient and G6PD-normal infants.
Main Methods:
- Retrospective evaluation of 4906 term and preterm neonates with indirect hyperbilirubinaemia.
- Assessment of demographic data, clinical features, bilirubin levels, G6PD enzyme levels, and treatment outcomes.
Main Results:
- G6PD deficiency was identified in 1.12% of the study population.
- No significant differences in jaundice onset, bilirubin levels, or phototherapy duration were observed between groups.
- G6PD-deficient infants had a significantly higher incidence of exchange transfusion (16.4% vs. 3.3%).
Conclusions:
- G6PD deficiency testing is recommended for all newborns undergoing phototherapy, particularly those from high-prevalence regions or showing poor response to treatment.
- Early identification of G6PD deficiency can guide management and prevent severe complications like kernicterus.
Aim:
The aim of this study was to investigate the prevalence of glucose-6-phospate dehydrogenase (G6PD) deficiency in newborn infants with neonatal hyperbilirubinaemia and to compare the clinical features of G6PD-deficient and G6PD-normal newborn infants.
Methods:
A total of 4906 term and preterm neonates with indirect hyperbilirubinaemia were retrospectively evaluated according to demographic, neonatal features, bilirubin levels, erythrocyte G6PD levels, other risk factors and treatments.
Results:
Among 4906 newborn infants with indirect hyperbilirubinaemia, 55 (1.12%) neonates were G6PD-deficient. In our study, no statistically significant difference was detected between G6PD-deficient and G6PD-normal infants in relation to the time of onset of jaundice, bilirubin levels and duration of phototherapy. However, the incidence of exchange transfusion in G6PD-deficient infants was 16.4% while it was only 3.3% in G6PD normal infants (P < 0.05).
Conclusion:
Testing for G6PD must be ordered to all newborns who are receiving phototherapy and especially to those who are coming from the high incident geographical regions and less responsive to phototherapy.
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