LINK / CITE ADD TO WORD LIST. noun. The definition of an organelle is a structure in a cell with a specific function. An example of an organelle is a centriole.oun. A differentiated structure within a cell, such as a mitochondrion, vacuole, or chloroplast, that performs a specific function. New Latin organella, diminutive of Medieval Latin organum, organ of the body, from Latin, implement, tool; see organ.
Urine Test Overview. Urinalysis, also called a routine urine test, is used to check for abnormalities in the urine.Urine is liquid waste, which is made by the kidneys and stored in the bladder until it is eliminated by the body through urination. A number of diseases and conditions can result in abnormalities in the urine.
In patients who have kidney disease or diabetes, urine tests are used to monitor the condition. Urinalysis also may be performed to detect a urinary tract infection (UTI), protein in the urine (proteinuria), or blood in the urine (hematuria), and to diagnose pregnancy. Toxicology screening can be used as part of urinalysis to detect illegal drug use. This is not part of routine urine testing.