From:  Determination of citrinin and sterigmatocystin in human urine: a risk assessment of citrinin exposure in the Valencian population

 ME was obtained for CIT and STG using the QuEChERS-based method developed.

CompoundMatrixSlopeR2ME (%)
CITInternal standard0.660.99111
Urine0.730.99
STGInternal standard7.290.9990
Urine6.580.99

CIT: citrinin; ME: matrix effect, calculated as shown in Equation 1; QuEChERS: Quick, Easy, Cheap, Effective, Rugged, and Safe; R2: correlation coefficients; STG: sterigmatocystin.