Table 2.

An Example of One Arbitrary Set of Parameters for Ranges of Blood Glucose and Choice of Plotting Symbols and Colors^a

(1)	(2)	(3)	(4)	(5)
Glucose category	Range of blood glucose (mg/dl)	Blood glucose relative to target rangeb	Color and symbol	Size
Very high	>180	Elevated gt; 40 mg/dl	Red square with super-imposed white “plus” signc	Large (6 point)
High	141–180	Elevated 1–40 mg/dl	Orange square with white “x”	Medium (3 point)
Target range	80–140	Within range	Green circle	Small (5 point)
Low	60–79	Low, by 1 to 20 mg/dl	Turquoise triangle	Medium (6 point)
Very low	< 60	Low, by gt;20 mg/dl	Blue diamond	Large (7 point)

^aParameters will often require customization.

^bThis column is particularly useful if the target range varies by time of day.

^cFor increased emphasis and clarity, one can use a symbol with a superimposed “plus” (+) sign for very high values or a superimposed “minus” (−) sign for very low values.