2[Na+]+0.055[glucose]+0.36[blood urea nitrogen]
This formula is for calculating plasma osmolality or plasma osmolarity?
The equation that provides the best fit between measured and calculated osmolality is 1.86(Na+K)+1.15(Glu/18)+(Urea/6)+14. The next best formula is 2Na+1.15(Glu/18)+(Urea/6).
Thank you.