hi there guys, I have just found some vials of grapeseed oil test in my locker, I think they have a year or so, if not more. Do you think this oil will have gone bad? is the hormone still effective? Thanks a lot 
Mine has an expiration date 3 years past the bottled date. Not sure if that assumes it remains capped or not though.
Stored in a locker, out of direct sunlight they will be good to go.
thanks mates! will give it a try