Na[+] (mEq/L) | |
Cl[-] (mEq/L) | |
HCO3[-] (mEq/L) |
Anion Gap in mEq/L =
[Na+] ? ([HCO3?]+[Cl?])
Normal: 12 ± 4 mEq/L
Provides indirect measure of serum anions not routinely measured
Helps categorize acidoses.
Gap acidoses: salicylates, uremic,methanol, paraldehyde, lactic,ethylene glycol, ketoacidosis
Nongap acidoses: carbonic anhydrase inhibitor, RTA, ureteral diversions,diarrhea/GI HCO3 losses.