What order by the health care provider should the nurse question? Test Name Result Reference Range WBC 12,000 4,000-11,000 Na+ 149 mEq/L 135-145 mEq/L K+ 5.0 mEq/L 3.5-5.0 mEq/L CI- 110 7.35-7.45 pH 7.34 7.35-7.45 PaCO2 34 mm Hg 35-45 mm Hg PaO2 78 mm Hg 80-100 mm Hg HCO3 21 mEq/L 22-26 mEq/L