Quantification of Multifunctional Dipeptide YA from Oyster Hydrolysate for Quality Control and Efficacy Evaluation

Table 3

Accuracy and precision of the RP-HPLC method in both intra- and interday.

		Concentration (μg/mL)
		24.1	34.1	54.1
Intraday	Day 1
	Mean	24.1	34.4	54.0
		0.6	0.1	0.9
	RSD	2.6	0.2	1.7
	Bias	-0.5	0.9	-0.2
	Day 2
	Mean	23.1	33.6	52.0
		1.0	0.1	0.4
	RSD	4.2	0.4	0.8
	Bias	-4.1	-1.5	-3.9
	Day 3
	Mean	23.2	32.9	53.7
		1.1	0.8	2.6
	RSD	4.6	2.4	4.8
	Bias	-3.6	-3.4	-0.7
Interday	Mean	23.6	33.6	53.2
		0.9	0.8	1.7
	RSD	3.6	2.2	3.1
	Bias	-2.2	-1.4	-1.6

, standard deviation; , relative standard deviation; RSD%=(standard deviation/mean)×100; %= (measured concentration-true concentration)/true concentration×100.