On Monday, Poonawala had come under an attack by some weapon-wielding men at the FSL when he was in a police van.
Also known as truth serum, it has been used for solving crucial cases in the past.
As Poonawala's five-day police custody ends on Tuesday, the Delhi Police is running against time to get the test conducted.
The narco analysis test on Aaftab Amin Poonawala, who has been accused of killing live-in-partner, will not be conducted on Monday even as the process required to do it has been initiated, officials said.
Officials said Poonawala's narco test was completely successful and his health condition was absolutely fine.
While seven accused were presented before the district and sessions judge, the eighth is a juvenile who moved a bail application before a judicial magistrate.