Table 4: Intraday and interday analysis of L-citrulline and L-arginine standard reported from isocratic RP-HPLC method.

CompoundsConcentration (µg/mL) Intraday () (%) Interday () (%)
MeanRSDMeanRSD

L-citrulline150101.251.23100.421.09
60102.071.46103.441.01
20116.442.03116.220.37

L-arginine150102.010.56103.832.05
6096.261.0497.361.13
2095.410.6895.940.33