Hello, Venusk26, and welcome to allnurses.com and the Forensic Nursing forum
Good to read of your interest about this career path. It is very interesting.
Yes, a non-nurse can seek certification in forensic science. Here is a link to the American College of Forensic Examiners Institute of Forensic Science (ACFEI), for information about the
Certified Medical Investigator-II.
Also, there are other types of forensic programs out there such as the certification as a Forensic Video Analyst, Crime Scene Technology, Forensic Science/Crime Scene Investigation, etc.
You do not have to be an RN in order to enter into the world of forensics. Many degreed programs out there for the non-nurse.
But, in order to become a Forensic
Nurse, one would have to first become LPN or RN. (and, we hope you decide upon nursing as a career path, too.

)
Hope this helps in answering your questions. Please do not hesitate to contact me via private message and/or post here if you have other questions/concerns.
Good luck in whatever you decide. We hope you enujoy your stay at allnurses.com.