Why You're Failing at normal AG reference range

https://anion-gap-reference119.brightsora.com/posts/how-to-use-an-anion-gap-calculator-using-sodium-chloride-and-bicarbonate

Anion gap blood chemistry helps determine acid and base balance, metabolic acidemia, and electrolyte imbalances. It assists medical interpretation of serum electrolytes, bicarbonate, and kidney function in routine laboratory testing.