"inherent difference" is a perfectly correct and usable phrase in written English.
It describes a difference which is part of the essential nature or characteristics of something. For example, you could say, "There is an inherent difference between the two approaches to solving the problem."
This suggests that there is no inherent difference in the results from the different assays, despite their different readouts.
This poor correlation could also reflect an inherent difference in vulnerability to 'toxic' effects of different forms of Aβ aggregates.
Is there an inherent difference in the people, such as ethnic backgrounds, or could the very different styles of life with nutrition play a role?
There's an inherent difference between horizontal and vertical directions; with only one vertical direction but many different horizontal ones.
That gap, he seemed to think, reflected some inherent difference between the races.
There's a hierarchy of trauma there, as well as a dangerous assumption of inherent difference.
There is no inherent difference, perhaps, between music that accompanies leftist propaganda and music that accompanies rightist propaganda.
Outside of Canada and the Netherlands, there is no inherent difference between herbal cannabis used recreationally and that used medically.
It had studied everything from the market price of foot speed to the inherent difference between the average major league player and the superior Triple A one.
If nothing else, the turmoil at the Cuban American National Foundation should highlight the inherent difference between the Castro regime and our government.
That inherent difference in approach is likely to become more visible as newspapers, including The New York Times, increasingly link up with television and the World Wide Web to extend their brands.
