Table 6 Parallelism evaluation.

From: Protoporphyrin IX plasma and blood pharmacokinetics and brain tumor distribution determined by a validated LC–MS/MS method

Dilution factor

Blood, PPIX (nM)

Brain tumor, PPIX (nM)*

1

1710

12000

2

1640

10100

5

1640

10500

10

1640

10500

20

1660

10800

Mean

1660

10780

Standard deviation

30.3

725.9

%CV

1.8

6.7

  1. *Reported concentrations represent the PPIX concentration in the tissue sample before homogenization.
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