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.
THE DRUG ITSELF can stay in your bloodstream up to 72 hours. It can stay in your urine for about 1 or up to 3 days after single use. Habitual or chronic use can be detected in urine for up to 12 weeks depending on quantity, duration, and frequency of use.