ABSTRACT
One of the useful aspects of clinical urine study is the fact that the collection of specimens in the great majority of instances is quite convenient and easy to accomplish. Many types of specimens have been used in urine studies. The basic type used most frequently is a simple spot or random specimen. There are limitations of any kind of urine collection based on the case of understanding of the directions. The proper container for urine specimens should be clean, but should contain no residues of cleaning compounds. Benzalkonium and other quaternary ammonium compounds used for cleaning urine collection vessels may cause a false positive test with the colorimetric procedure for protein. It is difficult to find any advantages to the collection of long-term, timed urine specimens. Most of the advantages relate to immediate collection of random urine specimens and testing such specimens as quickly as possible thereafter.
