SERUM/PLASMA Sodium 141 mmol/L ( 135-145 ) Potassium 3.6 mmol/L ( 3.5-5.5 ) Chloride 109 mmol/L ( 95-110 ) HCO3 23 mmol/L ( 22-30 ) Creatinine 66 umol/L ( 49-90 ) (Creatinine) 0.066 mmol/L ( 0.05-0.09) Urea 4.0 mmol/L ( 2.5-8.3 ) eGFR 76 ( SEE-BELOW) C-React Prot 152 mg/L ( <5 )