Table 2. Recovery and RSD values of vitamin B₂ contents for certified reference material

Sample	Vitamin B21) (mg/100g)		Recovery (%)	RSD4) (%)
	Reference value2)	Analysis value3)
SRM 1546a (meat homogenate)	0.035	0.033±0.0015)	94.48±1.65	1.74
SRM 3234 (soy flour)	0.336	0.361±0.014	107.24±4.18	3.89

Vitamin B₂: (FAD × 0.4537) + (FMN × 0.7869) + Riboflavin.
Reference value is the true value provided by NIST.
Analysis value is the experimental value obtained by HPLC assay for vitamin B₂.
RSD, relative standard deviation.
All values are expressed as the mean±SD of duplicate determinations.