The phrase "able to be ascertained" is correct and usable in written English.
It can be used when discussing something that can be determined or discovered through investigation or analysis.
Example: "The exact cause of the issue is not yet able to be ascertained, but we are working on it."
Alternatives: "can be determined" or "is ascertainable".
This study included 3304 adult patients over 18 years of age with ASA class I or II class who underwent general anesthetic management for noncardiac elective operations in our hospital from 1 January 2010 to 31 December 2010 and whose clinical and outcome data were able to be ascertained through hospital electrical records and provincial records until more than one year after surgery.
The integration status of the detected MCPyV DNA was not able to be ascertained; however, for 1 patient for whom multiple samples were tested, MCPyV was neither detected 2 months before nor 3 months after MCPyV-B4 was detected, which suggests that, at least in this particular patient, MCPyV may have had transitory presence or activity.
Another strength is that age at diagnosis was able to be reliably ascertained, a common shortcoming in other studies.
Maaßen said Russian secret services had been carrying out attacks on computer systems in Germany which, as far as his agency had been able to ascertain, were "aimed at comprehensive strategic data gathering".
N.C.: What we've been able to ascertain is that in the United Kingdom and Spain, they had advanced warning.
Its real value, as far as I have been able to ascertain, would be the symbolic importance, the morale boost it would give the fighters, to allow them to feel that they are not entirely alone in the world.
Through the use of previously collected data, we will be able to ascertain if there were cyanobacteria prior to patients' diagnosis and the species present, and therefore if there was a risk of L-BMAA presence in water.
The biographer, particularly the biographer of a contemporary, is often confronted with an ethical problem: how much of the truth, as he has been able to ascertain it, should be printed?
By employing a multiarm or factorial design, researchers may be able to better ascertain which components of mHealth interventions are most effective.
After the acoustic investigations, we conducted a diving investigation and were able to ascertain that the structures were made of concrete and were most likely parts of the old Nebukawa station.
Students will be able to ascertain which educational programs are likely to pay off.
