(type 4) conversion of lab values

5. mEq and mOsmol 5.1) mEq 5.1.1) mEq - General

5.1.1.1) mEq from weight/volume Normal 1


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The normal blood level of Na+ is 135 - 145 mEq/L. A patient is suffering from hyponatrimia , and the blood level is found to be 101.2 mEq/L. Express this in mg/dL unit.


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lb equals 232.76 mg/dL kg

    The term deci liter (dL) means tenth of a liter, or, 100 mL. For Na+ , the atomic weight is 23 and the valence is 1. Therefore, we can write:
    23 mg = 1 mEq.
    This fraction `(23 \quad mg)/(1 \quad mEq)` will be used in this problem. Using dimensional analysis, we can write: `(101.2 \quad mEq)/(1 \quad L) × (23 \quad mg)/(1 \quad mEq) × (1 \quad L)/(1000 \quad mL) × (100 \quad mL)/(1 \quad dL) `

    `= (232.76 \quad mg)/(dL)` Ans.