PMID- 29941365 OWN - NLM STAT- MEDLINE DCOM- 20190114 LR - 20190114 IS - 1879-0070 (Electronic) IS - 0732-8893 (Linking) VI - 92 IP - 3 DP - 2018 Nov TI - Comparison of clinical performance of commercial urine growth stabilization products. PG - 179-182 LID - S0732-8893(18)30180-9 [pii] LID - 10.1016/j.diagmicrobio.2018.05.023 [doi] AB - INTRODUCTION: Urine specimens for quantitative culture for the diagnosis of urinary tract infection may be unreliable due to bacterial overgrowth within 4 h after collection, at room temperature. Because specimen transportation may take longer than 4 h, urine preservatives may reduce overgrowth. Further evidence is needed to support a recommendation for use of preservative and to compare preservative products. METHODS: Consecutive midstream urine specimens submitted for culture were quantitatively cultured on receipt and then inoculated into 3 storage conditions [BD Urine Vacutainer (BD), Copan UriSwab (US), and refrigeration, with a room temperature control] for 72 h, with quantitative culture performed every 24 h. Odds ratio for significant growth interpretation was reported. RESULTS: Ninety-five of 501 (19.0%) urine specimens demonstrated significant growth. Within 24 h of storage, unpreserved urine at room temperature demonstrated a significantly increased odds ratio for significant growth as compared to preserved urine, and urine in refrigeration demonstrated similar odds ratio for significant growth as compared to preserved. There was no significant difference between the performance of US and BD. Over 48 and 72 h of storage, odds ratio for significant growth further increased. CONCLUSIONS: Preservation performed similarly to refrigeration. Preserved urine demonstrated a doubling in odds ratio for significant growth after 24 h. This increase may negatively impact antibiotic treatment decisions. CI - Copyright (c) 2018 Elsevier Inc. All rights reserved. FAU - Daley, Peter AU - Daley P AD - Memorial University, St. John's, Canada. Electronic address: pkd336@mun.ca. FAU - Gill, Yuvraj AU - Gill Y AD - Royal College of Surgeons, Ireland. FAU - Midodzi, William AU - Midodzi W AD - Memorial University, St. John's, Canada. LA - eng PT - Journal Article DEP - 20180601 PL - United States TA - Diagn Microbiol Infect Dis JT - Diagnostic microbiology and infectious disease JID - 8305899 RN - 0 (Reagent Kits, Diagnostic) SB - IM MH - Bacterial Load MH - Humans MH - Odds Ratio MH - Preservation, Biological/*methods/*standards MH - Reagent Kits, Diagnostic/*standards MH - Specimen Handling/*methods/*standards MH - Time Factors MH - Urinary Tract Infections/*diagnosis/*microbiology MH - Urine/*microbiology MH - Urine Specimen Collection OTO - NOTNLM OT - Preservative OT - Urine culture EDAT- 2018/06/27 06:00 MHDA- 2019/01/15 06:00 CRDT- 2018/06/27 06:00 PHST- 2018/01/26 00:00 [received] PHST- 2018/05/14 00:00 [revised] PHST- 2018/05/24 00:00 [accepted] PHST- 2018/06/27 06:00 [pubmed] PHST- 2019/01/15 06:00 [medline] PHST- 2018/06/27 06:00 [entrez] AID - S0732-8893(18)30180-9 [pii] AID - 10.1016/j.diagmicrobio.2018.05.023 [doi] PST - ppublish SO - Diagn Microbiol Infect Dis. 2018 Nov;92(3):179-182. doi: 10.1016/j.diagmicrobio.2018.05.023. Epub 2018 Jun 1.