Table 3 Matrix effect and normalised matrix factor for racemic primaquine and carboxyprimaquine
Analyte | Sample | R1 | R2 | R3 | R4 | R5 | R6 | Average | SD | CV (%) |
|---|---|---|---|---|---|---|---|---|---|---|
Matrix effects (%), (n = 6) | ||||||||||
 PRQ | QC1 | 1.17 | 1.22 | 1.07 | 1.10 | 1.10 | 1.11 | 1.13 | 0.06 | 4.93 |
QC3 | 0.92 | 0.88 | 0.97 | 0.99 | 1.03 | 0.95 | 0.96 | 0.05 | 5.43 | |
IS QC1 | 1.04 | 1.11 | 0.95 | 1.03 | 0.96 | 1.02 | 1.02 | 0.06 | 5.74 | |
IS QC3 | 0.95 | 0.90 | 0.98 | 1.01 | 1.05 | 0.97 | 0.98 | 0.05 | 5.19 | |
 CPRQ | QC1 | 0.99 | 1.07 | 1.02 | 0.98 | 0.96 | 0.97 | 1.00 | 0.04 | 4.08 |
QC3 | 1.03 | 0.98 | 0.98 | 1.05 | 1.00 | 1.00 | 1.01 | 0.03 | 2.73 | |
IS QC1 | 1.02 | 1.07 | 0.97 | 0.93 | 0.99 | 0.96 | 0.99 | 0.05 | 5.09 | |
IS QC3 | 1.08 | 1.06 | 1.16 | 0.98 | 0.98 | 0.98 | 1.04 | 0.07 | 7.09 | |
Normalised matrix effect (n = 6) | ||||||||||
 PRQ | QC1/IS QC1 | 1.13 | 1.10 | 1.13 | 1.07 | 1.15 | 1.09 | 1.11 | 0.03 | 2.59 |
QC3/IS QC3 | 0.97 | 0.98 | 0.98 | 0.98 | 0.98 | 0.99 | 0.98 | 0.01 | 0.60 | |
 CPRQ | QC1/IS QC1 | 0.97 | 1.00 | 1.05 | 1.06 | 0.97 | 1.01 | 1.01 | 0.04 | 3.78 |
QC3/IS QC3 | 0.95 | 0.93 | 0.85 | 1.07 | 1.02 | 1.02 | 0.97 | 0.08 | 8.32 | |