The phrase "certain testing" is correct and usable in written English.
You could use it in a sentence to describe something specific that has been done or is planned to be done in order to confirm something. For example, "The doctor requested certain testing to determine the cause of the patient's symptoms."
Even before yesterday, the F.D.A. had been sending letters to certain testing laboratories, including Genomic Health, questioning whether their tests should be regulated.
Informed questions about provenance or the validity of certain testing practices will often qualify an unfamiliar buyer as a fellow art lover.
In the e-mailed statement on Tuesday, the environmental groups asked the agency to explain why landowners are not routinely provided with quality-control measures and to clarify when and how certain testing protocols are used.
The state agency then drafted a new set of rules, a condition compliance order, that accepted the wind company's proposal but added a requirement that it actively show it was complying during certain testing periods and to stop operating if it was not.
Under certain testing conditions, the generation of bubbles can be enhanced up to a level of five times higher than the generation of bubbles in single-frequency stimulation, and can increase the hydrogen peroxide production up to an increase of one fold.
The relevant round robin test program provides valuable data generated during the experimental activity and statistical analysis thereof; then, based on the various testing approaches employed, the advantages/drawbacks of certain testing factors are summarized and critically assessed, reflecting the experience of involved institutions.
Let n be a total number of test images associated with a certain tested model.
"If certain tests had come back elevated, my parents would have stepped in," he said.
Rockland and Westchester counties have passed laws mandating certain tests be taken when homes are sold there.
"Of course, certain tests still have time built into them, but people understand that".
Still, he listened for the heart beat and made certain tests.
