PMID- 21846913 OWN - NLM STAT- MEDLINE DCOM- 20111031 LR - 20191210 IS - 1943-7722 (Electronic) IS - 0002-9173 (Linking) VI - 136 IP - 3 DP - 2011 Sep TI - Evaluation of a selection strategy before use of 16S rRNA gene sequencing for the identification of clinically significant gram-negative rods and coccobacilli. PG - 381-8 LID - 10.1309/AJCP61CGNXCXVSPR [doi] AB - Although 16S ribosomal RNA (rRNA) gene sequencing is well established for correctly identifying bacteria, its most efficient use in a routine clinical laboratory is not clear. We devised and evaluated a strategy to select gram-negative rods and coccobacilli (GNRCB) for which sequencing might be necessary before routine identification methods had been exhausted. The prospectively applied selection criteria were primarily based on the isolate's display of unusual or discordant phenotypic results and/or disease correlation. By using this strategy, we selected a total of 120 GNRCB (representing only approximately 2% of all identified). The strategy was demonstrated to be efficient because the preliminary phenotypic identification for 79.2% of those isolates needed revision (18.2% were novel and about a third would have required further extensive testing). The knowledge that 1.6% (ie, 79% of 2%) of isolated GNRCB might benefit from sequence identification could provide guidelines for routine clinical laboratories toward efficient use of sequence analysis. FAU - Mahlen, Steven D AU - Mahlen SD AD - Department of Laboratory Medicine, University of Washington, Seattle, USA. FAU - Clarridge, Jill E 3rd AU - Clarridge JE 3rd LA - eng PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Am J Clin Pathol JT - American journal of clinical pathology JID - 0370470 RN - 0 (DNA, Bacterial) RN - 0 (RNA, Bacterial) RN - 0 (RNA, Ribosomal, 16S) SB - IM MH - Bacterial Typing Techniques/*methods MH - DNA, Bacterial/chemistry MH - Gram-Negative Bacteria/*classification/genetics/isolation & purification MH - Humans MH - Prospective Studies MH - RNA, Bacterial/chemistry MH - RNA, Ribosomal, 16S/*genetics EDAT- 2011/08/19 06:00 MHDA- 2011/11/01 06:00 CRDT- 2011/08/18 06:00 PHST- 2011/08/18 06:00 [entrez] PHST- 2011/08/19 06:00 [pubmed] PHST- 2011/11/01 06:00 [medline] AID - 136/3/381 [pii] AID - 10.1309/AJCP61CGNXCXVSPR [doi] PST - ppublish SO - Am J Clin Pathol. 2011 Sep;136(3):381-8. doi: 10.1309/AJCP61CGNXCXVSPR.