TESTING POISON IN THE ARENA WITH BIGGIANTANT: (You lose 10 stats for poison actually :V )
First he poisoned me at 25% poison resistance(glok belt), I lost -10 stats and took 21 damage per tick.
Then he poisoned me at 60% poison ressitance(glok belt + worm of poisoning), I lost -10 stats and took 29 damage per tick.
Also: I'm got no sources :< , but nobody has put this information out there before. It's like looking at GK's MUD and trying to figure it out through some strange long winded trial and error process