King's College Criteria for Acetaminophen ToxicityLoading...Arterial pH less than 7.30No0Yes+1INR greater than 6.5; PT greater than 100 secNo0Yes+1Creatinine greater than 3.4 mg/dL; 300 µmol/LNo0Yes+1Grade III or IV hepatic encephalopathyNo0Yes+1Indications for UseInsights & Cautions