I asked the same question about a year ago. I was told that LA Pharma Anavar was tested several years ago and found to be counterfeit (was it Llewellyn's book??). Supposedly, it was found to contain zero active ingredient. However, some more recent opinions on their T3 were favorable.
Since I had it already, I gave it a try, and couldn't tell for sure if it was working. It's kinda hard to say when you've added it with GH, Clen, etc... Given that I've used a lot of T3 over the years, my gut tells me that it probably contains T3, just not as much as advertised.
I switched to Pharma grade and wont go back even though I have quite a bit left over.