Table 1. Precision of the Lumipulse G1200 system in measuring insulin and C-peptide.

Test item	Concentration	Measurements (N)	Mean	SD	CV (%)
					Repeatability	Between-run	Within-laboratory
Insulin (pmol/L)	Low	80	33.8	1.04	2.93	1.04	3.78
	Middle		517	15.5	3.16	1.35	3.78
	High		1,361	50.8	2.31	1.25	4.14
C-peptide (nmol/L)	Low	80	1.30	0.04	2.16	1.38	3.28
	Middle		4.81	0.12	1.85	1.78	2.89
	High		6.86	0.21	1.76	2.22	3.35