Table 5: Stability of BZP and TFMPP in derivatized plasma, urine and cell culture medium.

_____

Concentration (µg/mL)

Derivatized plasma sample stability (CV%)

Derivatized urine sample stability (CV%)

Derivatized cell culture medium sample stability (CV%)

BZP

TFMPP

BZP

TFMPP

BZP

TFMPP

Day 1

0.016

8

4

6

2

-

-

0.4

0

7

7

6

-

-

0.625

-

-

-

-

4

7

2.5

-

-

-

-

2

1

10

2

3

7

7

2

1

Day 2

0.016

18

9

13

14

-

-

0.4

3

4

15

15

-

-

0.625

-

-

-

-

3

2

2.5

-

-

-

-

5

7

10

5

3

14

15

1

2

Day 3

0.016

61

54

93

72

-

-

0.4

12

2

28

26

-

-

0.625

-

-

-

-

0

1

2.5

-

-

-

-

3

9

10

9

6

24

27

8

4

Day 4

0.016

126

134

92

117

-

-

0.4

22

18

54

53

-

-

0.625

-

-

-

-

4

8

2.5

-

-

-

-

1

3

10

11

8

52

72

0

3

Day 5

0.016

139

139

-

-

-

-

0.4

43

39

-

-

-

-

0.625

-

-

-

-

12

15

2.5

-

-

-

-

1

9

10

17

15

-

-

2

0