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Title: | An evaluation of the SENTiFIT 270 analyser for quantitation of faecal haemoglobin in the investigation of patients with suspected colorectal cancer. |
Author: | Augé Fradera, Josep Maria Rodriguez, Cristina Espanyol, Oihana Rivero, Liseth Sandalinas, Silvia Grau Cano, J. (Jaume) Jiménez Povedano, Wladimiro Castells Garangou, Antoni |
Keywords: | Cribratge Càncer colorectal Medical screening Colorectal cancer |
Issue Date: | 18-Nov-2017 |
Publisher: | Walter de Gruyter |
Abstract: | BACKGROUND: An evaluation of SENTiFIT® 270 (Sentinel Diagnostics, Italy; Sysmex, Spain) analyser for the quantitation of faecal haemoglobin (f-Hb) was performed. METHODS: The analytical imprecision, linearity, carry over and f-Hb stability were determined. Evaluation of the diagnostic accuracy was performed on 487 patients. RESULTS: Within-run and between-run imprecision ranged 1.7%-5.1% and 3.8%-6.2%, respectively. Linearity studies revealed a mean recovery of 101.1% (standard deviation, 6.7%) for all dilutions. No carry over was detected below 7650 μg Hb/g faeces. Decay of f-Hb in refrigerated samples ranged 0.2%-0.5% per day. f-Hb in patients with advanced colorectal neoplasia (ACRN) (colorectal cancer [CRC] plus advanced adenoma [AA]) were significantly higher than from those with a normal colonoscopy. Sensitivity for ACRN at f-Hb cutoffs from 10 to 60 μg Hb/g faeces ranged from 28.9% (95% confidence interval [CI], 21.7%-37.2%) to 46.5% (95% CI, 38.1%-55%), the specificity ranged from 85% (95% CI, 82.3%-87.3%) to 93.2% (95% CI, 91.2%-94.8%), positive predictive values for detecting CRC and AA ranged from 11.6% (95% CI, 7.6%-17.2%) to 20.6% (95% CI, 13.3%-30.3%) and from 34.7% (95% CI, 28.1%-42%) to 42.3% (95% CI, 32.4%-52.7%), respectively, and the negative predictive value for ACRN ranged from 90.2% (95% CI, 87.9%-92.2%) to 88.4% (95% CI, 86%-90.4%). Using two samples per patient sensitivity increased with a slight decrease in specificity. CONCLUSIONS: The analytical and clinical performances of SENTiFIT assay demonstrate a specific and accurate test for detecting ACRN in symptomatic patients and those undergoing surveillance. KEYWORDS: adenoma; analyser evaluation; colorectal cancer; faecal haemoglobin; faecal immunochemical test |
Note: | Reproducció del document publicat a: https://doi.org/10.1515/cclm-2017-0605 |
It is part of: | Clinical Chemistry and Laboratory Medicine, 2018, vol. 56, num. 4, p. 625-633 |
URI: | http://hdl.handle.net/2445/156197 |
Related resource: | https://doi.org/10.1515/cclm-2017-0605 |
ISSN: | 1434-6621 |
Appears in Collections: | Articles publicats en revistes (IDIBAPS: Institut d'investigacions Biomèdiques August Pi i Sunyer) Articles publicats en revistes (Biomedicina) |
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