| Na (mEq/L) | |
| K (mEq/L) | |
| Glucose (mmol/L) | |
| Urea (mmol/L) | |
| Measured (mOsm/KgH2O) | |
| Find | Osmolal Gap (Urine) Cal.Osmolality (Urine) |
Urine Osmolal Gap
=
Measured - Calculated
Calculated Osmolality
=
(2 × Na) + (2 × K) + Glucose + Urea