Table 1.

Reference values for normal, glucose-impaired (prediabetic), and diabetic humans, chimpanzees, and rhesus macaques

		Fasting blood glucose (mg/dL)	HbA1c (%)
Humans
	High healthy	70–99	≤ 5.6
	Glucose impaired	100–125	5.7–6.4
	Diabetic	≥126	≥6.5
Chimpanzees
	High healthy	≤105	≤5.0
	Glucose impaired	106–119	5.1–5.2
	Diabetic	≥120	≥5.3
Rhesus macaques
	High healthy	<80	<4.7
	Glucose impaired	81–100	4.7–5.0
	Diabetic	>100	>5.0

Values for humans are from reference 2; those for chimpanzees and rhesus are from reference 19.