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.
Johnny32525 New Member. Urine should be stored in a fridge for no more than 24 hours for use in a lab analysis. Source: Britain's National Health Service (NHS): I cant post link :/ but Google NHS urine sample and you can see my source. actually have no idea how long urine can be kept at room temp, refrigerated, or frozen. I do know that I keep urine longer than 8 hours until the delivery service gets here.