[Retracted] Quantitative Detection of Amino Acids and Carnitine in Human Blood and Quality Control of Peptide Drugs

Table 2

Within-day (n = 3) and between-day precision (n = 18) of metabolites in quality control.

Metabolites	Intraday RSD (%)		Daytime RSD (%)
	Low concentration quality control	High concentration quality control	Low concentration quality control	High concentration quality control
Gly	4.15	4.88	7.42	7.35
Cit	5.26	1.31	8.31	7.82
Ala	6.52	17.15	14.50	17.19
Val	10.98	14.24	14.09	22.01
Leu	5.58	3.88	11.80	8.48
Met	7.38	4.90	9.23	10.20
Phe	3.76	4.06	9.49	8.47
Tyr	8.97	7.72	10.83	10.57
C0	19.53	14.64	19.74	19.14
C2	11.70	6.66	13.22	12.62