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Editor-in-chief
Maria Stella Graziani

Deputy Director
Martina Zaninotto

Associate Editors
Ferruccio Ceriotti
Davide Giavarina
Bruna Lo Sasso
Giampaolo Merlini
Martina Montagnana
Andrea Mosca
Paola Pezzati
Rossella Tomaiuolo
Matteo Vidali

EIC Assistant
Francesco Busardò

International Advisory Board Khosrow Adeli Canada
Sergio Bernardini Italy
Marcello Ciaccio Italy
Eleftherios Diamandis Canada
Philippe Gillery France
Kjell Grankvist Sweden
Hans Jacobs The Netherlands
Eric Kilpatrick UK
Magdalena Krintus Poland
Giuseppe Lippi Italy
Mario Plebani Italy
Sverre Sandberg Norway
Ana-Maria Simundic Croatia
Tommaso Trenti Italy
Cas Weykamp The Netherlands
Maria Willrich USA
Paul Yip Canada


Publisher
Biomedia srl
Via L. Temolo 4, 20126 Milano

Responsible Editor
Giuseppe Agosta

Editorial Secretary
Chiara Riva
Biomedia srl
Via L. Temolo 4, 20126 Milano
Tel. 0245498282
email: biochimica.clinica@sibioc.it

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ISSN print: 0393 – 0564
ISSN digital: 0392- 7091



BC: Articoli scritti da C.G. Fraser

Valutazioni preliminari per la proposta di un unico dispositivo di campionamento per la ricerca dell’emoglobina su materiale fecale
Preliminary assessments for a standard sampling device for fecal hemoglobin detection
S. Rapi  |  C.G. Fraser  |  F. Cellai  |  M. Berardi  |  T. Rubeca  | 
<p>Sampling of feces is&nbsp;strongly affected by the lack of harmonisation, with differences up to 20 times in the mass collected for immunological&nbsp;tests for fecal hemoglobin (Hb) used in colorectal cancer screening. Aim of this study was to acquire information on&nbsp;fecal sampling and on the interaction between feces and analytical methods to obtain a reference design for a&nbsp;sampling dipstick. Bias and imprecision of sample collection dipsticks were estimated using gravimetry. Dissolution&nbsp;times of feces were monitored throughout the study. The effect of increasing amount of feces on Hb concentrations&nbsp;was investigated in saline and buffers of different manufacturers using a single analytical method (OC-Sensor, Eiken&nbsp;Chemical Co.). Fecal mass recovered with different devices ranged from 56 to 121% of declared amount (CV range:&nbsp;8.6&divide;31.1%). Time of dissolution up to 2 h was observed when lumps of materials were collected. In saline a rapid&nbsp;decrease of Hb values was observed, which was related to the overall amount of feces. Increased Hb values were<br />observed by adding feces to manufacturers&rsquo; buffers. Solubilisation time, bias and imprecision of sampling of feces&nbsp;were related to device design. Analytical methods are designed to use specific ratios between feces and buffers. The&nbsp;introduction of a standard dipstick design to reduce preanalytical variability may represent a crucial step for fecal test&nbsp;harmonization.</p>
Biochimica Clinica ; 39(6) 563-567
Contributi scientifici - Scientific Papers