Test No. 319B: Determination of in vitro intrinsic clearance using rainbow trout liver
S9 sub-cellular fraction (RT-S9)
The Test Guideline (TG) describes the use of liver S9 sub-cellular fraction (RT-S9)
of rainbow trout (Oncorhynchus mykiss) as a metabolising system to determine the clearance
(CL, IN VITRO, INT ) of a test chemical using a substrate depletion approach. Introduction
of the test chemical to the RT-S9 incubation medium initiates the reaction. In order
to collect samples at various time points, the reaction is terminated by transferring
an aliquot of the medium to a stopping solution. The decrease of the test chemical
concentration from the incubation vial is measured with a validated analytical method
and used to determine the CL, IN VITRO, INT. The value obtained can then be used
to improve in silico predictions of the test chemical bioaccumulation in fish.
Published on June 27, 2018Also available in: French
In series:OECD Guidelines for the Testing of Chemicals, Section 3: Environmental fate and behaviourview more titles