Urine anion gap

 

Input
 

Na		mEq/L
K		mEq/L
Cl		mEq/L

 

Result
 

Urine AG		mEq/L
Decimal Precision   0 1 2 3

 

 

Notes

• The urine anion gap is calculated from the difference between the major measured urinary cations (Na and K) and urinary anions (Cl).
• The normal value on a regular diet is -20 to -50 meq/L due to the appropriate presence of ammonium, which is an unmeasured cation.

 
Equations used
 

UrineAG = (Na + K) - Cl