Admission Labs:
Na (mEq/L) = 131 (135 - 145)
K (mEq/L) = 3.4 (3.5 - 5)
Cl (mEq/L) = 99 (95 - 103)
HCO3 (mEq/L) = 20 (24 - 30)
GLU (mg/dL) = 154 (100 - 125)
BUN (mg/dL) = 28 (7 - 20)
SCr (mg/dL) = 1.4 (0.6 - 1.3)
Mg (mEq/L) = 1.9 (1.3 - 2.1)
PO4 (mg/dL) = 4.4 (2.3 - 4.7)
Ca (mg/dL) = 9.5 (8.5 - 10.5)
WBC (cells/mm3) = 16 (4 - 11 x 103)
Hgb (g/dL) = 14 (13.5 - 18)
Hct (%) = 38 (38 - 50)
Plt (cells/mm3) = 399 (150 - 450 x 103)
INR = 1.4 (0.00 - 1.2)
TSH (mIU/L) = 18.1 (0.3 - 3.0)
MCV (fL) = 74 (80 - 100)
Lactate (mEq/L) = 2.9 (0.5 - 2.2)

Calculate BD's anion gap.
(Answer must be numeric; no units or comma; round the final answer to the nearest WHOLE number)