Enter the change in anion gap and the change in bicarbonate gap into the Delta Ratio Calculator. The calculator will evaluate and display the Delta Ratio. 

Delta Ratio Formula

The following formula is used to calculate the Delta Ratio. 

  • Where DLR is the Delta Ratio
  • AG is the change in anion gap 
  • BG is the change in bicarbonate gap 

To calculate a delta ratio, divide the change in anion gap by the change in bicarbonate gap.

How to Calculate Delta Ratio?

The following example problems outline how to calculate Delta Ratio.

Example Problem #1:

  1. First, determine the change in anion gap.
    • The change in anion gap is given as: 43.
  2. Next, determine the change in bicarbonate gap.
    • The change in bicarbonate gap is provided as: 50.
  3. Finally, calculate the Delta Ratio using the equation above: 


The values given above are inserted into the equation below and the solution is calculated:

DLR = 43 / 50 = .86

Example Problem #2: 

For this problem, the variables required are provided below:

change in anion gap = 70

change in bicarbonate gap = 300

Test your knowledge using the equation and check your answer with the calculator above.

DLR = AG / BG = ?