How to Solve Issues With using osmolar and anion gaps
https://anion-gap-widget991.opalvector.com/posts/anion-gap-calculator-for-renal-disease-reading-guide
Low anion gap decreased reasons may include low albumin, laboratory error, and elevated lithium exposure or bromide intake. Review electrolytes, albumin level, renal function, and acid-base balance to determine the underlying metabolic disturbance.