The phrase "admittedly using" is correct and usable in written English.
It can be used when acknowledging or conceding that one is employing a particular method or approach, often in a context where this might be seen as questionable or controversial.
Example: "Admittedly using unconventional methods, the researcher was able to achieve significant results."
Alternatives: "acknowledging the use of" or "conceding to the use of".
Admittedly, using a VAT would be controversial, because some people believe VATs are too regressive.
Commercial growers do the exact same thing on a mass scale, admittedly using fans, to get the same result.
Admittedly, using board diversity as a form of corporate defense is easy to counter activists could simply nominate more diverse candidates.
According to the EPI, admittedly using figures from the late 1990s, the gap between the top and bottom tenth of earners in America is wider than that in almost any other rich country.
Admittedly, using our sleep for self-improvement may only appeal to the more puritanical or ambitious among us.
All put together by one guy, admittedly using APIs developed by hundreds, but a fun demonstration of what's possible with the project right now.
The term "Islamist" – one I have, admittedly, used myself – is especially problematic.
One‐third of the nation's land belongs to the Federal Gov ernment, sparsely populated and admittedly used haphaz ardly and inefficiently for such purposes as marginal grazing.
I wouldn't wear a bra that warned me when I'm emotionally eating – though I could admittedly use that information – because I like how my bras make me feel sexy and beautiful.
Tom Flores, the last man to coach the Raiders to a Super Bowl, is a radio broadcaster for the team, a strange job for someone who admittedly used to loathe talking about anything.
Charles W. Mitchell Lutherville, Md . To the Sports Editor: As an educator for almost 50 years, I find it appalling that we are now ready to accept apologies from athletes like Alex Rodriguez and Andy Pettitte, who admittedly used performance-enhancing drugs.
