4-day-old newborn baby having icterus involving sole, bilirubin level (mg/dl) -

Dermal staining of bilirubin Described by Kramer Jaundice progress in cephalocaudal direcon o Divided in 5 zone Zone Bilirubin 4-6 mg/dl - Face 6-8 mg/dl - Trun k & upper abdomen 8-12 mg/dl - Lower abdomen & thign 12-14 mg/dl - Arm & leg 5) > 15 mg/dl - Palm & sol