Taste it, if it still tastes like piss I'd say its still good. Now if it tastes like sh*t, I'd throw it out.
LoL
I would smell it to see if it has turned into amonia.
If it smells fresh I would use it.
But if it smells like amonia I would get more.
I probbly would get more any way.
It would be sad to blow a chance on a buck of a life time
over a little bottle of pee.
JMHO