The phrase "a useful level" is correct and usable in written English.
It can be used when referring to a degree or standard of something that is beneficial or practical in a particular context.
Example: "Achieving a useful level of understanding in this subject will greatly enhance your performance in the exam."
Alternatives: "a beneficial degree" or "a practical standard".
Further research, for example, whether different levels of sensitivity of arrays could produce a useful level of specificity, or the usefulness of other thyroid-specific gene transcripts, such as TPO-mRNA, should however be performed; further thought should also be given to the use of complete gene profiles of the tumour in the follow-up of differentiated thyroid carcinoma.
The term is used here as a measure of the probability that a useful level of potency for chemical modulation of the therapeutically relevant biochemical activity of a protein can be readily achieved in vitro.
I very seriously question is it actually a useful level of expenditure," he told the party's conference in Brighton.
The fastest-spreading language in human history, English is spoken at a useful level by some 1.75 billion people worldwide that's one in every four of us.
The British Council reckons that English is spoken at a useful level by some 1.75 billion people, a quarter of the world's population.
A simple weighed combination of box temperature of the device and 14 cm deeper temperatures can provide a useful level of Wenner compensation.
I'm not sure that's something to celebrate, but it's a useful leveller).
However, on a clinical level, a more useful level of analysis denominator might be individuals, because roughly 40% of psychiatric inpatients are readmitted within a year of discharge.
However, false positive SNV calls could not be reduced to a biologically useful level.
Blurred definitional lines exist between mode of action, posed as a pragmatically useful level of understanding of "key events" involved in specific health outcomes, and mechanism of action, which implies a deeper, more deterministic knowledge of the exposure disease process.
However, you can achieve a practical, useful level of self-understanding.
