Table 2. Validation data for protein-bound BMAA.

	Fortified Lamb’s Brain Samples
	3 μg/g	9 μg/g	30 μg/g
Intra-day RSD (%) (n = 6)	6.5	2	4.6
Inter-day RSD (%) (n = 18)	5	5.3	3.6
Average conc. (repeatability) (μg/g)	2.87	8.87	30.90
Average conc. (reproducibility) (μg/g)	2.91	9.05	30.28
Absolute recovery (%)*	80	85	86

^*Absolute recovery expressed as the extraction efficiency when spiked at 4 μg toxin per g brain.