The phrase "ascertained quickly" is correct and usable in written English.
It can be used when referring to the process of determining or finding out information in a fast manner.
Example: "The results of the experiment were ascertained quickly, allowing the team to proceed with the next phase of the project."
Alternatives: "determined swiftly" or "established rapidly."
Called the AmpliChip CYP450 assay, it uses genetic analyses to ascertain how quickly people metabolize certain drugs, thus predicting who is most likely to experience unpleasant or even toxic side effects.
He quickly ascertained, however, that quite a few staff members were not open to new ways of doing things.
When she fell ill with fever and a cough, doctors quickly ascertained that she had caught tuberculosis from one of her inmate patients.
Ms. Albert quickly ascertained that Mr. Bolton was "totally focused on painting, totally focused," she said, "and I came up with various reasons to spend time with him".
An American to my right, an assistant high-school principal named John Finn, from California, said that on the way in from the airport his cabdriver quickly ascertained that he was an American and said, "You shouldn't be in Iraq".
To deal with the common issue that the efficacy endpoint often cannot be quickly ascertained, we employ Bayesian data augmentation to handle delayed efficacy and allow for flexible patient accrual without a waiting period.
They quickly ascertained that the body belonged to 14-year-old Lorena Cultraro.
I quickly ascertained that seeing a doctor was quite a novelty for her.
Unfortunately, the cop who pulled over Righeimer must not have been in on the plan because he quickly ascertained that the politico hadn't been drinking.
"OMG," people squealed "is this going to be like Japan??" Nuclear safety expert Bob Alvarez quickly ascertained that Lake Anna was only designed to withstand up to a 5.9 to 6.1 earthquake on the Richter scale.
