Mine is blue powder, just a little clump in the bottom of the vial, i honestly didnt pay much attention when i added water last couple times, and today filling afresh vial i noticed all 12 of my vials only have a blue powder in the bottom, no white puck. I could have sworn it was a white puck and turned blue when i added water. Anyone have some to take a look at or recall what yours looked like, its been in fridge entire time and i hope it did not spoil...