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).
a first morning urine specimen should be collected 48 hours later and tested. 3. False negative results may occur when the levels of hCG are below the sensitivity level of the test. When pregnancy is still suspected, a first morning urine or serum specimen should be collected and tested 48 hours later.