Phototaxis is a kind of taxis, or locomotory movement, that occurs when a whole organism moves towards or away from stimulus of light. This is advantageous for phototrophic organisms as they can orient themselves most efficiently to receive light for photosynthesis.
The Urine Culture Test measures the level of bacteria in the urine. *Price may vary by location â contact your local ANY LAB TEST NOWÂ®. Test results are generally available within 24 â 72 business hours after the specimen is collected. A bacterium known as Escherichia coli (E. coli) causes the majority of lower urinary tract infections (UTIs).
Quick Answer. The results from a urine test can take from a few days to a week for a positive screen, while negative results are usually found in a single day. Additionally, if a rapid test is requested, the results are received on the same day. Some drugs are detectable in urine from a couple days to three or four weeks with chronic use, such as marijuana. To reduce the chances of a false-positive, provide an up-to-date history of all prescription, over-the-counter and herbal drug use prior to taking the urine test. If a positive result is received, some labs have the option to pay for a retest of the original urine sample.