How to Solve Issues With urine anion gap calculation method

https://anion-gap-range805.almoheet-travel.com/what-is-a-below-normal-anion-gap-and-what-does-it-mean

Low anion-gap reduced causes may involve hypoalbuminemia, lab error, and elevated lithium exposure or bromide exposure. Assess electrolyte results, albumin level, renal function, and acid–base balance to find the root metabolic abnormality.