Chemotaxis (from chemo- + taxis) is the movement of an organism in response to a chemical stimulus. Somatic cells, bacteria, and other single-cell or multicellular organisms direct their movements according to certain chemicals in their environment.
It will be good for up to six months, in the vacuum seal, if stored in the refrigerator. If frozen in the vacuum seal, it can last for about 1 year. Once the sample is removed from the vacuum seal, it should not remain at room temperature for more than 18 hours. It will keep in the refrigerator, unsealed, for 30 days.
So letâs break this down and figure out how many hours pee is good forâ¦. 1  Urine can stay fresh at room temps for about 5 hours. 2  You can keep frozen pee for a very long time, thatâs if stored properly. 3  Pee stays good in glass for long term, 5 plus hours. 4  You can you keep urine for a drug test for about 10- 18 hours. 5  Sterile clean glass works best.