Table 3.

Precision/reproducibility

		Mean concentration (mg/L)				Within day RSD (%)			Day-to-day RSD (%)			Total RSD (%)
Analyte	Spike	AN	TT	Average	AN/TT × 100	AN	TT	RMS average	AN	TT	RMS average	AN	TT	RMS RSD
Myo- Inositol	Low	10.1	10.5	10.3	96.2	2.64	1.93	2.31	7.64	13.4	10.9	8.09	13.5	11.2
	Med	71.5	72.2	71.8	99.0	2.72	1.72	2.28	1.57	12.4	8.86	3.14	12.6	9.15
	High	132	135	133	97.8	3.31	2.31	2.85	1.97	10.2	7.35	3.85	10.5	7.88
D-Chiro Inositol	Low	11.2	11.1	11.2	101	3.65	4.42	4.05	9.74	19.8	15.6	10.4	20.3	16.2
	Med	71.7	74.5	73.1	96.2	2.54	2.34	2.44	2.96	9.53	7.06	3.89	9.81	7.46
	High	131	136	133	96.3	2.66	1.32	2.10	1.15	8.70	6.21	2.90	8.80	6.55
1,5 ADS	Low	15.7	16.9	16.3	92.9	2.98	3.51	3.26	8.63	14.6	12.0	9.13	15.0	12.4
	Med	71.4	72.6	72.0	99.2	2.82	2.15	2.51	2.99	9.20	6.84	4.11	9.45	7.29
	High	130	133	131	97.7	2.87	2.10	2.51	1.31	11.7	8.35	3.15	11.9	8.71

Abbreviations: 1,5 ADS, 1,5-anhydro-D-sorbitol; AN, Abbott Nutrition; TT, Texas Tec.; RSD, relative standard deviation (%); total RSD, square root (within day SD² + day-to-day SD²).