A former NYPD narcotics detective yesterday took the stand at his Queens perjury trial to vehemently deny planting drugs on innocent citizens.

“No, no, no. Absolutely not!” Adolph Osback, 40, maintained when asked if he ever “faked a sale.”

Osback conceded making several mistakes on his alleged victims’ drug-buy documents because of “copy-and-paste errors” or not “correcting” the template form.

Several of Osback’s exonerated victims testified that they never sold drugs to the undercover, let alone, ever saw him before.

As the final witness in his trial, Osback compared his undercover work to “being a paid actor.”

“One day I’m the primary seller, the next I’m the ghost of the operation, the roles can even reverse during the operation,” he said.