can we do m.sc perfusion after b.sc biochemistry
Nope! After BSc Biochemistry you can pursue MSc Perfusion Technology. Being a Perfusionist is a professional paramedical course. So you need to have a BSc degree in Perfusion Technology/ Cardiac Care Technology or any of the similar type.
To know about the career of perfusionist visit the link below:
https://www.careers360.com/careers/perfusionist
I hope this helps.