The phrase "assure clearance" is correct and usable in written English.
It can be used in contexts where you want to guarantee or confirm that something is clear or unobstructed, often in relation to safety or permission.
Example: "Before we proceed with the construction, we need to assure clearance from the local authorities."
Alternatives: "ensure clearance" or "confirm clearance".
Once assuring total clearance of parasites from blood and excellent health condition, monkeys were released back into their natural habitat close to the site where they had been captured with the supervision of CORPOAMAZONIA officials.
He drafted the letter according to his understanding of the facts, and he circulated it beforehand to other people for clearance to assure that it accorded with their understanding of the facts".
Data quality was assured besides ethical clearance.
Such a traditional regulatory clearance timeline may assure safety and efficacy of diagnostic devices beyond imaginable limits of liability, but it also assures that best practice standards for clinical diagnostics are constrained to technologies that perform with nearly obsolete capabilities and specifications.
"For several years, officials in central government denied that the central clearance process caused unnecessary delay, or did anything other that assure consistent responses to FOI requests.
Ethical clearance was assured from Institutional Review Board of School of Public Health, College of Medicine and Health Sciences, University of Gondar.
A second test after clinical improvement allows for earlier discharge from the Ebola ward conditional on antigen clearance, thus assuring safety for contacts of convalescent patients, avoiding unnecessarily long stays in the isolation unit, decreasing stress levels for the convalescent, and reducing the work load for staff [ 19].
They urged that a compulsory license was essential to assure public broadcasting broad access to copyrighted materials at reasonable royalties and without administratively cumbersome and costly "clearance" problems that would impair the vitality of their operations.
Clearance (usually termed tappet clearance) must be maintained between the ends of the valve stems and the lifter mechanism to assure proper closing of the valves when the engine temperature changes.
