Case synopsis

Initial laboratory results show:

• Complete blood count normal
• Potassium = 3.4 mmol/l (lower limit of normal = 3.5 mmol/l)
• Glucose = 9.8 mmol/l (upper limit of normal = 6.0 mmol/l)
• Creatine kinase = 864 IU (upper limit of normal = 120 IU)