FCA1-0658

FCA1-0658

A 30-year old female athlete was brought to the Emergency Room for complaints of light-headedness and nausea. Clinical chemistry studies were done and the results were the following: Na: 144 mmol/L (Reference: 137-144 mmol/L), K: 6 mmol/L (Reference: 3.5-4.9 mmol/L), Cl: 115 mmol/L (Reference: 95-107 mmol/L), HCO3: 24 mmol/L (Reference: 20-28 mmol/L), BUN: 9.5 mmol/L (Reference: 2.5-7.5 mmol/L), Crea: 301 µmol/l (Reference: 60 – 110 µmol/L), Glucose: 3.5 mmol/L (Reference: 3.0-6.0 mmol/L). Taking into consideration the values above, in which of the following ranges will his osmolarity fall into?