1,5 anhydroglucitol
(an‵hī‵drō-gloo'sĭ-tol‵ 
)
[ 1an- + hydro- + gluco- + -itol ]
ABBR: 1,5-AG
A monosaccharide excreted by the kidneys when glucose levels are normal. Assay for it are used as a biochemical measure of recent variability in glucose control. During hyperglycemia and glycosuria, more 1,5-AG than normal is excreted in the urine and serum levels of 1,5-AG decrease.