u·ri·nal·y·sis 
(yr′ə-nălĭ-sĭs)
(yr′ə-nălĭ-sĭs)n. pl. u·ri·nal·y·ses (-sēz′)
Laboratory analysis of urine, used to aid in the diagnosis of disease or detect the presence of a specific substance, such as an illegal drug.
[URIN(O)- + (AN)ALYSIS.]