Nawaz Sharif had complained about his health on Saturday.
A team of health officials led by Dr Kiyani carried out the former premier's medical check-up at Central Jail Rawalpindi on Sunday.
The accountability court that convicted Sharif and his daughter in a corruption case had ordered they be sent to Adiala Jail after they were taken into custody at the Lahore airport and produced before it on July 13.
Urea nitrogen in former Pak PM's blood climbed to risky levels, heartbeat is irregular, he suffers from dehydration, excess sweating.
On Thursday, a pre-arranged meeting between the lawyers and the father-daughter duo was cancelled by authorities at Adiala Jail.
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Sharif has a known history of diabetes and a heart condition and underwent a surgery in 20016.
The PML-N supreme leader was awarded 10 years in prison, while his daughter Maryam and her spouse Capt. Safdar were handed seven years' and one year's prison term, respectively.
Nawaz personal doctor Dr. Adnan was not allowed to treat him in jail. The amount of urea in his blood has also become very high, which could even lead to kidney failure, the report said.
The Punjab Prisons sources told Daily Express that they are waiting for the Punjab home department's orders about shifting Sharif to the hospital.
Sharif is dehydrated and at the risk of renal malfunctioning, a report prepared by doctors said after they had examined the former premier.
The official said that a separate medical team from the district headquarters hospital conducted a medical check-up of Sharif's jailed son-in-law, retired Captain Muhammad Safdar, as he was suffering from ear and throat infections.