The initial diagnosis of neonatal jaundice is based on a physical examination, which is done by placing the infant by a window and checking for signs in natural sunlight. The Jaundice usually starts from the head region and can be first detected in the face. It then slowly spreads down the body and reaches the feet. At this stage the baby must be in the care of a health professional. Blood tests can also be carried out to confirm Hyperbilirubinemia.