TY - JOUR T1 - THe myth of the low anion gap AU - Goldstein RJ, Lichtenstein NS, Souder D Y1 - 1980/05/02 N1 - 10.1001/jama.1980.03300430039020 JO - JAMA SP - 1737 EP - 1738 VL - 243 IS - 17 N2 - Sixty-seven thousand seven hundred forty consecutive sets of electrolyte levels measured at the Massachusetts General Hospital were reviewed, and their anion gaps were calculated. A low anion gap (less than 8 mEq/L) was found in 304 patients (0.8%). Repeatedly low anion gaps were found in only 19 patients. Eight patients were hypoalbuminemic, and eight were hyponatremic. For the entire population, there was a positive correlation between sodium concentration and anion gap. The average anion gap was 16.25 mEq/L. The most common cause of a low anion gap was presumptive laboratory error.(JAMA 243:1737-1738, 1980) SN - 0098-7484 M3 - doi: 10.1001/jama.1980.03300430039020 UR - http://dx.doi.org/10.1001/jama.1980.03300430039020 ER -