Passage: On 6 July 1948, Jinnah returned to Quetta, but at the advice of doctors, soon journeyed to an even higher retreat at Ziarat.  Jinnah had always been reluctant to undergo medical treatment, but realising his condition was getting worse, the Pakistani government sent the best doctors it could find to treat him. Tests confirmed tuberculosis, and also showed evidence of advanced lung cancer. He was treated with the new "miracle drug" of streptomycin, but it did not help. Jinnah's condition continued to deteriorate despite the Eid prayers of his people. He was moved to the lower altitude of Quetta on 13 August, the eve of Independence Day, for which a ghost-written statement for him was released.  Despite an increase in appetite (he then weighed just over 36 kilograms [79 lb]), it was clear to his doctors that if he was to return to Karachi in life, he would have to do so very soon. Jinnah, however, was reluctant to go, not wishing his aides to see him as an invalid on a stretcher.By 9 September, Jinnah had also developed pneumonia. Doctors urged him to return to Karachi, where he could receive better care, and with his agreement, he was flown there on the morning of 11 September.  Dr. Ilahi Bux, his personal physician, believed that Jinnah's change of mind was caused by foreknowledge of death. The plane landed at Karachi that afternoon, to be met by Jinnah's limousine, and an ambulance into which Jinnah's stretcher was placed. The ambulance broke down on the road into town, and the Governor-General and those with him waited for another to arrive; he could not be placed in the car as he could not sit up. They waited by the roadside in oppressive heat as trucks and buses passed by, unsuitable for transporting the dying man and with their occupants not knowing of Jinnah's presence.  After an hour, the replacement ambulance came, and transported Jinnah to Government House, arriving there over two hours after the landing. Jinnah died later that night at 10:20 pm at his home in Karachi on 11 September 1948 at the age...

Question: What did tests confirm?
tuberculosis