The phrase "artificially high levels" is correct and usable in written English.
It can be used in contexts discussing measurements, statistics, or conditions that have been manipulated to appear higher than they naturally would be.
Example: "The study revealed that the artificially high levels of pollutants in the water were due to industrial waste dumping."
Alternatives: "unrealistically elevated levels" or "excessively high levels".
But sooner or later the prices of things bought on credit rise to artificially high levels.
The bid-offer spreads that banks earn on trades are falling from artificially high levels.
Illegal steroids are of particular concern in preteen and teenage boys, doctors said, because artificially high levels of testosterone can stop their bones from growing.
In addition, the smaller companies argue that the rates they pay to Telmex were set at artificially high levels by regulators.
The current food landscape is inundated with food engineered to contain artificially high levels of sugar and fat.
According to the authors, Lukashenko will be vulnerable to financial pressure ahead of the 2015 presidential election, as he tries to maintain salaries and pensions at artificially high levels.
"During the summer of 1995 and through the fourth quarter of 1995," the commission's order said, "Sumitomo's copper trader and the U.S. copper merchant plotted and executed their scheme to push copper prices to an artificially high level and then exit the joint operation by liquidating" their large positions.
Blood pressure may be kept at an artificially high level under controlled conditions by infusion of norepinephrine or similar drugs; this helps maintain cerebral perfusion.
The river is maintained at an artificially high level, and when the sluice is lowered falls a couple of metres to allow access to the fourth and fifth chambers, two small air spaces.
The Senate bill also would not apply to the emergency spending that causes the Corps budget to fluctuate dramatically from one year to the next, so lawmakers would not be locked in to an artificially high level of spending after a disaster like Hurricane Katrina.
Further blocks are likely, as A20 B cells with artificially high level heparan sulfate expression remain poorly infectible [8].
