Abstract
Objective
To assess feasibility and recall rates for newborn screening for congenital hypothyroidism, galactosemia and biotinidase deficiency in a predominantly rural and inner city population in and around the City of Lucknow in Uttar Pradesh, India.
Design
Prospective observational study.
Setting
Two tertiary-care and 5 district hospitals in and around Lucknow.
Participants
All babies born in above hospitals during the study period.
Methods
Heel prick samples were collected after 24 hours of life. Dried blood spot TSH, total galactose and biotinidase were assayed by immunofluorometry. Age related cut-offs were applied for recall for TSH. For galactosemia and biotinidase deficiency, manufacturer-suggested recall cut-offs used initially were modified after analysis of initial data.
Main outcome measure
Recall rate for hypothyroidism, galactosemia and biotinidase deficiency.
Results
Screening was carried out for 13426 newborns, 73% of all deliveries. Eighty-five percent of those recalled for confirmatory sampling responded. Using fixed TSH cut off of 20 mIU/L yielded high recall rate of 1.39%, which decreased to 0.84% with use of age-related cut-offs. Mean TSH was higher in males, and in low birth weight and vaginally delivered babies. Eleven babies had congenital hypothyroidism. Recall rates with modified cut-offs for galactosemia and biotinidase deficiency were 0.32% and 0.16%, respectively.
Conclusion
An outreach program for newborn screening can be successfully carried out in similar socio-cultural settings in India. For hypothyroidism, the high recall rate due to early discharge was addressed by age-related cut-offs.
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Gopalakrishnan, V., Joshi, K., Phadke, S. et al. Newborn screening for congenital hypothyroidism, galactosemia and biotinidase deficiency in Uttar Pradesh, India. Indian Pediatr 51, 701–705 (2014). https://doi.org/10.1007/s13312-014-0485-x
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DOI: https://doi.org/10.1007/s13312-014-0485-x