IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-5-49518 Original Research Paper Serum Tsh Level In Healthy Neonates A Screening Tool For Congenital Hypothyroidism And Trends Of Normal Variation Of Tsh In A Tertiary Care Centre In Western Uttar Pradesh Rasbihari Dr. Dr Yogesh Kumar Goel Dr. Dr. Hiru Navaney Dr. May 2023 12 5 01 02