Pediatrics In a child with acute liver failure, the most important abnormal serum biochemical test that indicates poor prognosis: A Increasing transaminases B Increasing bilirubin C Increasing prothrombin time D Reversal of serum albumin-globulin ratio 💡 Explanation In a child with acute liver failure, the most important abnormal serum biochemical test that indicates poor prognosis: ✓ Correct Answer: C. Increasing prothrombin time