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Table 1 Clinical laboratory results for a patient who had taken a single oral overdose of 5900 mg caffeine

From: Pharmacokinetics of caffeine self-administered in overdose in a Japanese patient admitted to hospital

  Day 1, at 12 h Day 2, at 30 h Day 3, at 56 h
Aspartate aminotransferase (U/L) 19 19 17
Alanine aminotransferase (U/L) 11 11 15
Serum creatinine (mg/dL) 0.50 0.57 0.69
Creatinine clearance (mL/min) 117 102 85
Serum potassium (mmol/L) 2.9 3.5 3.7
Serum sodium (mmol/L) 137 139 141
Serum glucose (mg/dL) 190 126 87
pH [venous blood gas] 7.43 7.43 not available
Lactic acid [venous blood gas] (mmol/L) 3.01 0.96 not available