Factors affecting analytical performance in clinical chemistry laboratories

report of working party nominated by the Royal College of Pathologists the Association of Clinical Biochemists, the Institute of Medical Laboratory Sciences.
  • 2.55 MB
  • English

[Royal College of Pathologists] , [London]
ContributionsRoyal College of Pathologists., Association of Clinical Biochemists., Institute of Medical Laboratory Sciences.
ID Numbers
Open LibraryOL14094802M

Factors affecting Analytical Performance in clinical chemistry laboratories. Full text. Full text is available as a scanned copy of the original print version.

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Factors affecting Analytical Performance in clinical chemistry laboratories By FV Flynn Topics: Book ReviewsCited by: 2. Analytical issues related to PG measurement Establishment of traceability of PG results. In laboratory medicine, the production of accurate and equivalent results on patient samples requires the standardization of measurements by the implementation of an unbroken metrological hierarchy able to ensure traceability of results to the highest available level of by: A patient’s diet, health status and lifestyle factors can all have a pre-analytical influence on laboratory parameters.

Diet and nutritional status Fasting, calorie restriction, food exclusion diets, malnutrition and dehydration can all affect laboratory results. Some factors affecting the precision of routine analytical methods have been investigated.

The precision of urea, Na, K, Cl and CO 2 determinations with the Auto-Analyzer was better with aqueous solutions than with sera. The standard deviation increased, and the coefficient of variation decreased, with concentration in many by: Certain patient populations (i.e., pediatric, geriatric, dialysis and oncology patients) present additional challenges in obtaining a specimen for therapeutic drug monitoring or other clinical laboratory tests.

Some other pre-analytical patient factors include patient identification, time of dose versus collection, hemolysis/lipemia, drug interactions, and degree of protein binding. Laboratory testing can be divided into preanalytic, analytic, and postanalytic phases.

Medical errors are most frequent in the preanalytic phase of testing. Preanalytic variables can affect test results, leading to misinterpretation and inappropriate patient care.

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The analytical performance of a POCT blood glucose meter was evaluated in patient service. • QC data from thousands of users was extracted from the data management system for analysis. • The factors affecting meter performance were investigated. • Low level of user competency was still the major factor affecting performance of glucose : Yun Huang, Edward Campbell, Bonita Colbourne, Jeanette Power, Edward Randell, Edward Randell.

There are pre-analytical, analytical and post analytical factors that contribute to accurate test results in clinical laboratories. Pre-analytical variables account for % of laboratory errors, and encompass the time from when thetest is ordered by the physician until the sample is ready for Size: KB.

Preanalytical factors affecting medical laboratory operations: request forms received at our clinical chemistry laboratory. Based on a request form audit we. – Clinical Laboratory Improvement Amendments (CLIA) requirements – Match performance specs established by the manufacturer • Accuracy • Precision • Reportable Range • Verify manufacturer’s reference intervals • Determine test system calibration and control procedures based on specs above • Document all activities.

However, laboratory results do not always correspond with the patient's clinical status. They may be unexpected and surprising.

On the other hand, an abnormal laboratory result may be accepted as such and interpreted as a sign of a disease. However, an abnormal result may result from several factors other than by: Identification of the Factors Affecting the Analytical Results of Food Allergen ELISA Methods Article in European Food Research and Technology (1).

Abstract Background: Determination of blood glucose concentration is one of the most important measurements in clinical chemistry worldwide. Analyzers in central laboratories (CL) and point-of-care tests (POCT) are both frequently used.

In Germany, regular participation in external quality assessment (EQA) schemes is mandatory for laboratories performing Cited by: 1. Defining analytical performance specifications: Consensus Statement from the 1st Strategic Conference of the European Federation of Clinical Chemistry and Laboratory Medicine The Stockholm Consensus Conference on quality specifications in laboratory Cited by:   The total testing process defines the preanalytic, analytic, and postanalytic phases of laboratory testing and serves as the basis for designing and implementing interventions, restrictions, or limits that can reduce or remove the likelihood of errors.

Preanalytic factors act on both the patient and the specimen before analyses. Kristen J. Skogerboe received a B.S. in chemistry from Colorado State University and a Ph.D. in analytical chemistry from Iowa State University. She is a diplomate of the American Board of Clinical Chemistry and also certified in Clinical Molecular Genetics by the American Board of Medical Genetics.

Policies to be introduced include tutorials dedicated to the examination of pre-analytical factors affecting laboratory tests and a compulsory in-lab observation of the specimen reception process to improve awareness of the causes of sample rejection.

Continuing medical education credits will be offered constantly on the by: 2. protocols or guidelines on the “Design, Conduct and Interpretation of Method Performance Studies” [1] on the “Proficiency Testing of (Chemical) Analytical Laboratories[2] and on ” “Internal Quality Control in Analytical Chemistry Laboratories” [3].

File Size: 72KB. The key data source for setting a reference interval is the reference interval study performed according to the Clinical and Laboratory Standards Institute (CLSI) and IFCC recommendations.

1, 2 Ideally this should be performed by the laboratory establishing the reference interval. However data from one study is rarely sufficient and in any case should be. laboratories also began transforming an already extent international stan-dard for nonmedical industrial laboratories [11] for use in the medical lab-oratory environment.

The initial result was the international medical laboratory standard ISOMedical laboratoriesdParticular require-ments for quality and competence [12].

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Muhammad Daniyal. Indexed and Abstracted ISSN (Online) African Journal of Education and Technology ISSN (Print) Volume 1 Number 2 (), pp. 51 THE FACTORS AFFECTING THE STUDENTS’ PERFORMANCE: A CASE STUDY OF ISLAMIA UNIVERSITY OF BAHAWALPUR, PAKISTAN Muhammad.

Analytical performance specifications can in principle be set in three different ways [1], i.e., based on the effect of analytical performance on clinical outcome, based on components of biological variation of the measurand or based on by: Analytical Performance of 10 High-Volume Clinical Chemistry Assays on the Alinity c System Article in Laboratory Medicine 50(2) September with 79 Reads How we measure 'reads'.

When the International Federation of Clinical Chemistry (IFCC) working group on laboratory errors and patient safety defined a set of 25 laboratory quality indicators [76], the majority (16) were related to the pre-analytical phase, while only four were analytical but another five were by: The clinical chemistry services are probably the largest of the disciplines making up the clinical laboratory service regarding workforce, workload and expenditure.

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In the early years of the NHS there was evidence of poor analytical performance by the clinical chemistry laboratories. This was shown by external quality assessment (EQA) by: 2. Start studying Analytical Factors. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

The clinical laboratory improvement act to make clinical lab testing subject to the same legal reqs. & American Association of Clinical Chemistry (AACC). Specimens processed and returned in a certain period of time. These activities include test ordering, patient preparation, specimen collection, transportation, preparation, and storage.

Since activities in the pre-analytical phase are neither performed entirely in the clinical laboratory nor under the control of laboratory personnel, they are harder to. Discover how analytical chemistry supports the latest clinical research This book details the role played by analytical chemistry in fostering clinical research.

Readers will discover how a broad range of analytical techniques support all phases of clinical research, from early stages to the implementation of practical applications. Moreover, the contributing authors Format: Hardcover.

Clinical Chemistry, issued monthly, is published in print and electronically by the American Association for Clinical Chemistry (AACC) in partnership with Oxford University Press. The journal welcomes contributions, either experimental or theoretical, in the field of laboratory .Key Factors in Implementing SARS-CoV-2 Serology Tests.

sittithat tangwitthayaphum / istock. Lab professionals give points to FDA EUAs, test performance characteristics, throughput, and staffing requirements. Read the CLN Stat article.The pre-analytical phase involves specimen collection, acquisition by the laboratory, labeling and coding, and preparation for analysis.

The analytical phase involves the actual running of the test, while the post-analytical phase includes recording the results, interpreting the results, reporting the results to the ordering physician, and.