Test P discolouraton

[Lee_1978]

Hi all,

i'm preparing for my next cycle in the new year and noticed that 3 of the six test p vials I had left over from my previous cycle are a few shades darker than the others ones which are very pale yellow, as is usual. There aren't any floaters or particles in the fluid, so not sure what it could mean? They're all from the same lab and batch with the same expiry date.

Thanks

[austinite]

Carrier likely different between the two. Nothing to be concerned about.

[Lee_1978]

I thought as much but have never come across this so wasn't sure.

Thanks