Anions high what does it mean ?

Anion Gap?: "The anion gap is the difference between primary measured cations (sodium Na+ and potassium K+) and the primary measured anions (chloride Cl- and bicarbonate (sodium bicarbonate) HCO3-) in serum. This test is most commonly performed in patients who present with altered mental status, unknown exposures, acute renal failure, and acute illnesses." (http://emedicine.medscape.com/article/2087291-overview)