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Information on the Anion Gap can be found on the Common Questions tab.
At a Glance
Why Get Tested?
To detect a problem with the body's electrolyte balance
When to Get Tested?
As part of routine health screening or when your healthcare provider suspects that you have an imbalance of one of the electrolytes (usually sodium or potassium) or an acid-base imbalance
A blood sample drawn from a vein in your arm
Test Preparation Needed?