Best Answer

Serum Osmolarity = 2 [Na] + [Glucose] + [BUN] (if all in mmol/L) OR

Serum Osmolarity = 2 [Na] + [Glucose]/18 + [BUN]/2.8 (if glucose and BUN are in mg/dl)

Q: Formula to calculate serum osmolarity

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The serum formula.

Captain America is a fictional super-hero. There is no super-serum. Sorry.

All you do is take the total number of ions in the compound and multiply it by the molarity to calculate the osmolarity.Thus,0.12 * 3 = 0.36

The last clue is the serum formula.

Not a clue, but the serum formula of all the clues combined.

yes, water flows from low osmolarity to high osmolarity when two solutiona are separated by a semi-permeable membrane till the solutions on either side of the membrane attains equal osmolarity.

you find the formula... then you calculate it. Its that simple.