2019 AOAC CASP Book

) and  Intermediate Precision  (RSD i ) 

Repeatability (RSD r

for Cannabinoids in a Dried Plant Material

Analyst 1

Analyst 2

Analyst 1 & 2

Analyte

Mean conc.  (%, w/w)

RSD r (n=5)

Mean conc.  (%, w/w)

Mean conc.  (%, w/w)

RSD r (n=5)

RSD i (n=10)

CBDVA CBDV CBDA CBGA

0.0389 0.0496 0.257 0.0390 0.697 0.0437 0.0845 0.0347 3.94

2.2 4.7 1.6 2.1 3.5 4.2 3.2 1.7 2.0

0.0355 0.0508 0.258 0.0393 0.699 0.0452 0.0856 0.0343 3.78

1.8 1.5 0.9 0.6 1.2 0.3 1.3 0.4 1.6

0.0372 0.0502 0.258 0.0391 0.698 0.0444 0.0851 0.0345 3.86

5.1 3.5 2.4 1.4 2.5 2.8 2.9 1.3 1.8

CBG CBD

Δ 9 ‐THC THCA

CBC

Data: Courtesy of K. Mastovska, Eurofins  Food Integrity & Innovation (Method  AOAC First Action Official status)

Accurate, precise, specific methods for each matrix!