Nondiabetic: < 5%
Diabetes well controlled: 2.5–6%
Diabetes not well controlled: > 8%
. Lavender-top tube.
■ Prolonged blood glucose elevation causes a greater
percentage of RBCs to become saturated with glucose (glycohemoglobin).
■ Used for monitoring average diabetic control for preceding 3
months as blood cells typically live for 2–3 months.
