Farouq announced her arrival at the anti-graft office via her X handle.
The minister, who served under the administration of former President Muhammadu Buhari, is accused of laundering over N37,170,855,753.44.
The money was said to have been laundered through a contractor, James Okwete.
Probing the allegation, EFCC had invited the former minister for clarification.
But, the former minister initially failed to honour the invitation due to health challenges.
However, she wrote: “I have, at my behest, arrived at the headquarters of the Economic and Financial Crimes Commission (EFCC) to honour the invitation by the anti-graft agency to offer clarifications in respect of some issues that the commission is investigating.”