Dr Austin Omondi has appealed for support in demanding his immediate release.
Taking to his X page, he claimed he was abducted.
"I was this afternoon abducted by the Police incommunicado while conducting a blood donation drive at the Sikh Union," he claimed.
Dr Omondi well known as Japrado, claimed his family and legal representatives have been denied access to him.
"I appeal for your support in demanding my immediate release."
Dr Ouma Olunga also took to his X page saying they have reported the alleged abduction at Parklands Police Station.
He reiterated the notice for strike if Japrado is not released by midnight.
"If the guy is not released by midnight, health workers all over the country will go to all police stations, DCI offices and NIS offices to look for him. LSK and health unions have ordered us," he said.
Law Society of Kenya President Faith Odhiambo updated her X page, saying she was leaving Parklands Police Station after assisting the family to record the abduction, together with KMPDU and the medical fraternity.
"We demand the immediate release of Dr Austin Omondi! We remain undeterred and will strive to fight for his release!" she said.