Medical Definition of ORGANELLE. : a specialized cellular part (as a mitochondrion or ribosome) that is analogous to an organ.Britannica.com: Encyclopedia article about organelle. a specialized cellular part (as a mitochondrion, lysosome, or ribosome) that is analogous to an organ. See organelle defined for kids.
A urinalysis is a test of your urine. A urinalysis is used to detect and manage a wide range of disorders, such as urinary tract infections, kidney disease and diabetes. A urinalysis involves checking the appearance, concentration and content of urine. Abnormal urinalysis results may point to a disease or illness.
Urine testing can detect most drugs within set time period. Blood testing is more accurate but also more expensive and has a shorter period of detectability. Hair tests can accurately test for the presence of substances for the longest amount of time. Saliva is relatively easy to test but cannot test for all substances.