Lack of reference materials and standard procedures, on faecal tests leads to major problems in harmonisation of methods and do not allow the comparison of outcome data. In particular the absence of standardisation of pre-analytical characteristic was noted for faecal test methods for haemoglobin since different manufacturers have developed different sampling procedures and report units. Moreover the physical characteristics of the faecal specimen and the designs of specimen collection devices do not allow analysis of samples on different systems in consequence, faecal tests cannot be compared using standard evaluation protocols. To improve the harmonization of results generated using different analytical systems and the overall performances of test on faecal materials we propose the introduction of standard procedures for sampling and pre-analytical phase and the adoption of specific procedures based on the use of artificial biological samples for comparison of methods. Harmonization of sampling devices with the use of a standard design for pickers and a standard ratio between analyte and buffer for different manufacturers represent a mandatory step in the roadmap for harmonization of clinical laboratory measurement on faecal materials and can allow a significant standardisation of results generated by different devices.The creation of specific protocols for the evaluation and comparison of analytical methods for analyse of faeces could lead to a significant improvement in the performance of methods and systems.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.5301/jbm.5000093 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Guidelines for the standardization of pre-analytical variables for salivary biomarker studies in Alzheimer's disease research: An updated review and consensus of the Salivary Biomarkers for Dementia Research Working Group.
Alzheimers Dement
December 2024
Oasis Diagnostics® Corporation, Vancouver, Washington, USA.
There is a pressing need for accessible biomarkers with high diagnostic accuracy for Alzheimer's disease (AD) diagnosis to facilitate widespread screening, particularly in underserved groups. Saliva is an emerging specimen for measuring AD biomarkers, with distinct contexts of use that could complement blood and cerebrospinal fluid and detect various analytes. An interdisciplinary, international group of AD and related dementias (ADRD) researchers convened and performed a narrative review of published studies on salivary AD biomarkers.
View Article and Find Full Text PDFInvestigating the incremental value of urine sediment reporting in emergency medicine with a Sysmex UN urinalysis system.
Adv Lab Med
December 2024
Section of Clinical Biochemistry and School of Medicine, University of Verona, Verona, Italy.
Objectives: Urinalysis is widely used and is also frequently requested in emergency situations for screening hypovolemia, urinary tract infections, diabetes, ketoacidosis and hematuria. Our aim was to evaluate the impact of reporting urinary sediment in emergency department specimens with the Sysmex UN system.
Methods: We evaluated urinalyses requested by the emergency department over a three-month period and examined red blood cell count interference, compared leukocyte esterase dipsticks to cytofluorimetric leukocyte count and nitrites to cytofluorimetric bacterial count.
Effect of time and temperature on the stability of HPV and cellular nucleic acid using simulated dry self-samples.
J Virol Methods
December 2024
Scottish HPV Reference Laboratory, NHS Lothian, Royal Infirmary of Edinburgh, Little France, Edinburgh EH16 4SA, United Kingdom; HPV Research Group, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom.
Background: Self-sampling is now a key component within HPV-based cervical screening programmes to engage individuals and enhance participation. As self-sampling is relatively new, information on the influence of pre-analytical parameters such as transit-temperature and time between sampling and testing on HPV test results requires detailed investigation.
Methods: FLOQSwabs® and Evalyn Brushes® were used to assess HPV and cellular stability over a 30-week period (0w,4w,12w,30w) at 4 °C, ambient, and 37 °C.
Effect of Hemolysis on Routine Blood Gas and Whole Blood Analytes.
J Appl Lab Med
December 2024
Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, United States.
Background: Hemolysis is a major pre-analytical concern for many laboratory analytes; however, instruments utilized for whole blood chemistries and blood gas measurements lack the ability to detect and measure the degree of hemolysis. This study evaluated the effect of hemolysis on 13 routine whole blood and blood gas analytes and compared visual assessments of hemolysis to measured hemolysis (H-index).
Methods: Remnant whole blood samples (n = 85) were split into 2 portions and aspirated through a syringe one or more times.
Flow Cytometry Analysis of Tissue Factor Expression in Human Platelets.
J Vis Exp
November 2024
Centro Cardiologico Monzino IRCCS; Department of Pharmaceutical Sciences, Università degli Studi di Milano;
A subset of circulating human platelets stores Tissue Factor (TF) intracellularly, the key activator of the blood coagulation cascade and thrombus formation. Upon platelet activation, TF is exposed on the cell membrane, where it binds to FVII, ultimately leading to thrombin generation. Considering that (1) levels of TF-positive platelets increase in various clinical settings, contributing to the patient's prothrombotic phenotype, and (2) different drugs can modulate platelet-associated TF expression, a standardized method for assessing TF-positive platelets is valuable, as its evaluation has been controversial in the past.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!