Table 12.

N-methyltyramine repeatability results

Materiala	nb	Result, μg/g	SDc, μg/g	RSD, %	PRSDd, %	HorRat
A	20	<300	NA	NA	NA	NA
B	20	1321	48.8	3.70	5.41	0.68
C	20	5464	575	10.2	4.37	2.3
D	20	9326	1960	19.5	4.03	4.8
E	20	1667	156	8.95	5.22	1.7
F	20	<300	NA	NA	NA	NA

^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.