There are inherent differences between the use of a NOEC or LOEC derived from hypothesis testing to estimate a safe concentration, and the use of a LC, IC, EC, or other point estimates derived from curve fitting, interpolation, etc.
LOECs calculated through testing the hypothesis are different from ICs found through interpolation.
LOECs found via hypothesis testing are almost identical to ICs calculated via interopolation.
the men are by each other
The boy is outside.
Pimephales promelas is a word.
The dog is running.
I heard that he was not a team player.
The woman is in the car.