I would suggest sticking it in the freezer (mild chill so it won't freeze to ice), or in the fridge. Keep it in a sealed, tight container like a tupperware and then wrap it in more plastic. The sooner you use that urine, the better the results of your urine or the other person's urine. Source(s):
Regulus (also known as Alpha Leonis) is a trinary star system at coordinates 3.99S 2.81E in Federation space, known as the Regulan system. Regulus is visible from Earth in the constellation of Leo. The system's three stars include Ra and UFC-113, and are the location of at least thirteen planets.
Regus PLC, the shared office space company that offers more traditional office space than WeWork, has a market capitalization of about $2.8 billion and 2013 operating profit of about $150 million. Regus went public in 2000, and its market value today is about half its dotcom-era peak at more than 360 pence a share.