urine /yo͝or″in/ [Gk, ouron] , the fluid secreted by the kidneys, transported by the ureters, stored in the bladder, and voided through the urethra. Normal urine is clear, straw-colored, and slightly acid; has the odor of urea; and has a specific gravity between 1.003 and 1.035. Its normal constituents include water, urea, sodium chloride, potassium chloride, phosphates, uric acid, organic salts, and the pigment urobilin. Abnormal constituents indicative of disease include ketone bodies, protein, bacteria, blood, glucose, pus, and certain crystals. See also bacteriuria, glycosuria, hematuria, ketoaciduria, proteinuria. −urinary, adj.
