Table 10.

Synephrine repeatability results

Materiala	nb	Result, μg/g	SDc, μg/g	RSD, %	PRSDd, %	HorRat
A	20	8290	123	1.48	4.10	0.36
B	20	26110	439	1.68	3.46	0.49
C	20	66580	1585	2.36	3.00	0.79
D	20	292300	6898	2.37	2.41	0.99
E	20	11980	432	3.55	3.88	0.91
F	20	4686	80.3	1.71	4.47	0.38

^aA = NIST bitter orange fruit powder, B = Nutratech C. aurantium dried fruit, C = NIST bitter orange extract 6% synephrine, D = Nutratech C. aurantium extract 30% synephrine, E = Product A capsules, F = Product B tablets.

^bn = Total number of samples tested.

^cSD = Standard deviation.

^dPRSD = Predicted relative standard deviation.