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Table 3 Matrix effects for VEN and IS in plasma samples of the rat and dog

From: Quantification of venadaparib, a novel PARP inhibitor, in the rat and dog plasma using liquid chromatography/tandem mass spectrometry

 

Matrix factor1

IS-normalized

 

VEN

IS

Matrix effect2

Rat plasma

LQC (3 ng/mL)

A

0.77

0.83

0.92

B

1.06

1.00

1.06

C

0.97

1.03

0.95

D

0.99

1.07

0.92

E

0.99

0.99

1.00

F

0.91

0.98

0.93

A (Hemolyzed)

1.00

1.02

0.97

B (Hemolyzed)

1.05

0.99

1.06

Mean ± SD

0.97 ± 0.09

0.99 ± 0.07

0.98 ± 0.06

CV (%)3

9.5

7.0

5.8

HQC (800 ng/mL)

A

0.96

0.94

1.02

B

1.00

1.00

1.00

C

1.01

1.00

1.01

D

1.00

0.96

1.03

E

0.98

0.99

0.99

F

1.04

1.00

1.04

A (Hemolyzed)

1.01

1.02

0.99

B (Hemolyzed)

1.03

1.01

1.02

Mean ± SD

1.00 ± 0.02

0.99 ± 0.03

1.01 ± 0.02

CV (%)

2.5

2.7

2.0

Dog plasma

LQC (3 ng/mL)

A

0.82

0.79

1.05

B

0.96

0.97

0.99

C

0.88

0.93

0.94

D

1.14

0.92

1.24

E

1.09

0.98

1.11

F

0.93

0.90

1.04

A (Hemolyzed)

0.80

0.80

0.99

B (Hemolyzed)

0.97

0.96

1.01

Mean ± SD

0.95 ± 0.12

0.91 ± 0.07

1.05 ± 0.09

CV (%)

12.8

8.3

8.8

HQC (800 ng/mL)

A

1.03

0.93

1.11

B

1.03

0.97

1.06

C

1.06

1.01

1.05

D

1.11

1.03

1.08

E

1.07

1.02

1.05

F

1.04

1.00

1.04

A (Hemolyzed)

1.03

1.01

1.05

B (Hemolyzed)

1.04

1.01

1.03

Mean ± SD

1.05 ± 0.03

1.00 ± 0.03

1.05 ± 0.03

CV (%)

2.7

3.3

2.6

  1. 1Matrix factor = [peak area of analyte added post-extraction]/[peak area of analyte standards]
  2. 2Normalized Matrix Factor = Matrix Factor for Analyte/Matrix Factor for IS
  3. 3CV (%) = standard deviation/mean × 100