The New York Police sent the test results to French authorities on Sunday where they allegedly confirmed the trace. The results are expected to be made public shortly.
Mr Strauss-Kahn, 62, who is accused of trying to rape a maid last week in his suite at the Sofitel hotel in New York, was released from Rikers Island jail on Friday.
His lawyer has already indicated he plans to argue that there was consent.
The latest revelations, published on the French website Atlantico.fr, came amid reports the former IMF chief sought the company of two female hotel members of staff after he checked into the Sofitel one day before his alleged sexual assault on the maid on May 14. Both receptionists declined the offer of a drink.
Mr Strauss-Kahn has been indicted on seven charges, including forcing the maid to perform oral sex on him and attempted rape. If he is convicted, he would face up to 25 years in prison.
There's also been some reports that DSK phoned the front desk and asked the receptionist who picked up if she would like to join him in his room for a drink, and she declined. There's also other reports from Europe that DSK was known as "The Seducer" or something like that. The majority of French people still think it's a set up though.
They appear to be dumb asses.