title: Clinical evaluation of a urine transport kit with lyophilized preservative for culture, urinalysis, and sediment microscopy.
abstract: Comparative results of urine culture, specific gravity, chemical urinalysis, and sediment microscopy were assessed when specimens submitted to the clinical laboratory were divided and processed either in a transport kit containing a lyophilized preservative or in a conventional sterile cup without preservative. Overall agreement of results of 853 cultures after a 24-hr holding period (preserved samples at room temperature, unpreserved samples refrigerated) and 277 repeat cultures after a 48-hr holding period also showed excellent agreement (99.1% and 95.7%, respectively). Results of urinalysis and sediment microscopy done on 370 specimens demonstrated greater than 98% agreement after receipt of specimens in the laboratory and greater than 94% agreement after the holding periods. Specific gravity determinations from samples processed in the presence of preservative consistently were 0.006-0.007 units greater than in samples processed without preservative, and a reporting adjustment will be necessary when the transport kit is used.
mesh_terms: D001424:Bacterial Infections / Q000652:urine*; D005069:Evaluation Studies as Topic; D005612:Freeze Drying; D005658:Fungi / Q000302:isolation & purification; D006090:Gram-Negative Bacteria / Q000302:isolation & purification; D006094:Gram-Positive Bacteria / Q000302:isolation & purification; D006801:Humans; D009181:Mycoses / Q000652:urine*; D011933:Reagent Kits, Diagnostic; D014556:Urine / Q000032:analysis / Q000382:microbiology
chemical_list: D011933:Reagent Kits, Diagnostic