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.
A number of diseases and conditions can result in abnormalities in the urine. These abnormalities often may be detected through physical, chemical, and microscopic examination. Urinalysis may be performed as part of a regular physical examination to screen for early signs of disease.rinalysis should be performed within 15 minutes of collecting the urine sample. If that is not possible, the urine should be refrigerated. Some parts of routine urinalysis are performed using a dipstick test or tablet test, and others are completed using microscopic (under a microscope) evaluation in a laboratory.