Concentration (μg/ml) Repeatability Intermediate precision
% of amount found* (n=5) % RSD % of amount found# (n=10) % RSD
20 100.84 ± 0.135 0.134 101.75 ± 1.296 1.273
60 103.93 ± 0.622 0.598 104.35 ± 0.599 0.574
80 102.93 ± 0.255 0.248 103.73 ± 1.135 1.095
*Expressed as the mean of five replicates in a day ± SD
#Expressed as the mean of five replicates per day over two days ± SD
Table 1: Indicator for precision based on repeatability performed within the same day of measurement and intermediate precision of alpha-mangostin using the prospective HPLC method.
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