Table 1. Comparison of biochemical parameters between patients with diabetes mellitus and non-diabetics.

Biochemical parameter	Diabetes (N = 163)	Non-diabetics (N = 67)	P-value
Fasting blood glucose (mmol/L)	9.7 (7.5-14.8)	4.7 (3.7-5.2)	< 0.001
Serum fructosamine (µmol/L)	422 (333-540)	280 (237-350)	< 0.001
Hemoglobin A1c (mmol/mol)	73 (59-98)	33 (31-36)	< 0.001
Glycated nail protein (µmol/g nail)	5.30 (2.80-9.12)	2.90 (1.42-4.97)	< 0.001