What's Holding Back the age based anion gap norms Industry?

https://anion-gap-estimator566.rivetgarden.com/posts/anion-gap-calculator-patient-reference-to-test-results

Reliable anion gap calculator for fast acid-base evaluation, electrolyte disorder assessment, and reliable metabolic acidemia assessment. Dependable clinical calculator with serum sodium, chloride, bicarbonate inputs for fast, precise lab reading.