Examine stool directly and test for blood
Apt test: distinguishes maternal versus infant's blood (fetal Hgb is resistant to alkali and stays pink, adult Hgb hydrolyzed by alkali--> yellow/brown)
Evaluate for underlying emergent etiology if sick or suggestive presentation
abnormal abdominal exam (distension, tenderness, abnormal bowel sounds): abdominal plain film
Apt test: distinguishes maternal versus infant's blood (fetal Hgb is resistant to alkali and stays pink, adult Hgb hydrolyzed by alkali--> yellow/brown)
abnormal abdominal exam (distension, tenderness, abnormal bowel sounds): abdominal plain film
Neonatal lower gastrointestinal bleeding
Emergent: typically do not present with isolated hematochezia
Breast milk jaundice
Necrotizing enterocolitis
Infant scalp hematoma
Malrotation with volvulus
Grey baby syndrome
Hirschsprung's disease