[SIZE="4"]Is there anyway to perserve bud from drying out? I have to take urine test on a regular basis and the bud dries out before I use it all.
I considered vacum packing, freezing, or a combination of the two.

Get a jar. I bought one recently and it works fabulous. You can find one at your nearest smoke shop or go to 420 Jars - Freshness Matters to order or to check out the types of jars.

yeah p/u a mason jar..they seem to keep meds fresh 4 a long time

i like to keep mine in one of those jars people keep flour in with the metal latch and the rubber seal

As already said, mason jar.. It's nice when you get hella crystals built up at the bottom, scrape that shit and enjoy.