Fig. 2.

Predicted glucose concentrations versus expected (actual) concentrations plotted on Clarke error grids [11]. Top row: aqueous solution (left) and serum solution (right) measured with FTIR. Bottom row: aqueous solution (left) and serum solution (right) measured with QC laser spectroscopy. The individual regions labeled A-E are described as follows: A - clinically accurate reading, B - result that would lead to benign action or inaction, C - results that would lead to unnecessary corrections, D - results that would lead to inaction when action is necessary, and E - results that would lead to treatment opposite to what should be given.