The Antilles (/ Ã¦ n Ë t Éª l iË z /; Antilles in French; Antillas in Spanish; Antillen in Dutch and Antilhas in Portuguese) is an archipelago bordered by the Caribbean Sea to the south and west, the Gulf of Mexico to the northwest, and the Atlantic Ocean to the north and east.
Drug test. For other uses, see Drug testing (disambiguation). A drug test is a technical analysis of a biological specimen, for example urine, hair, blood, breath, sweat, or oral fluid/salivaâto determine the presence or absence of specified parent drugs or their metabolites.
In renal physiology, when blood is filtered by the kidney, the filtrate passes through the tubules of the nephron, allowing for exchange of salts, acid equivalents, and other solutes before it drains into the bladder as urine.