1
|
Jones GRD. Using analytical performance specifications in a medical laboratory. Clin Chem Lab Med 2024; 0:cclm-2024-0102. [PMID: 38624006 DOI: 10.1515/cclm-2024-0102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Accepted: 04/03/2024] [Indexed: 04/17/2024]
Abstract
Analytical performance specifications (APS) are used for the quantitative assessment of assay analytical performance, with the aim of providing information appropriate for clinical care of patients. One of the major locations where APS are used is in the routine clinical laboratory. These may be used to assess and monitor assays in a range of settings including method selection, method verification or validation, external quality assurance, internal quality control and assessment of measurement uncertainty. The aspects of assays that may be assessed include imprecision, bias, selectivity, sample type, analyte stability and interferences. This paper reviews the practical use of APS in a routine clinical laboratory, using the laboratory I supervise as an example.
Collapse
Affiliation(s)
- Graham Ross Dallas Jones
- Department of Chemical pathology, SydPath, St Vincent's Hospital, Darlinghurst, NSW, Australia
- Facult of Medicine, University of NSW, Kensington, Australia
| |
Collapse
|
2
|
Zorić L, Štritof PG, Čičak H, Zekan P, Pavasović MG, Blagaić V, Čoklo M, Šimundić AM, Dukić L. Verification of bile acid determination method and establishing reference intervals for biochemical and haematological parameters in third-trimester pregnant women. Clin Chem Lab Med 2024; 0:cclm-2023-1109. [PMID: 38557367 DOI: 10.1515/cclm-2023-1109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 02/28/2024] [Indexed: 04/04/2024]
Abstract
OBJECTIVES The aims of this study were to verify the bile acids (BA) method and to establish reference intervals (RIs) for bile acids (BA) and biochemical and haematological parameters in Croatian pregnant women. METHODS BA spectrophotometric method verification was performed on Siemens Atellica Solution CH 930 automated analyser using Sentinel reagent. Stability, precision, trueness, linearity, and RIs, as well as lipemia interference were tested according to CLSI guidelines. BA, biochemical, and haematological parameters were measured in serum (BA, biochemical) and whole blood (haematological) samples of fasting healthy third-trimester pregnant women from Croatia (n=121). The establishment of the RIs was done a priori according to the CLSI EP28-A3C:2010 guideline. Selected reference individuals' data were analysed using parametric, non-parametric, and robust methods. RESULTS Stability study showed that BA are stable in serum samples for 2 days at 20 °C, 14 days at 4-8 °C, and 22 days at -20 °C. The precision study and adult RIs verification met the criteria. Linearity was verified for the concentration range of 3.5-172.1 μmol/L whereas the lipemia interference test showed a positive bias (%) in BA concentration. The determined reference limits generally exhibited better precision for haematological parameters, being lower than the upper recommended value 0.2, unlike biochemical parameters. Haematological parameters showed notable differences between pregnant and non-pregnant women, while many biochemical parameters' RIs remained similar. Only ALT and GGT showed lower non-comparable RI upper limits in the population pregnant women. CONCLUSIONS Spectrophotometric BA method showed satisfactory performance and all examined parameters were within the set criteria. Moreover, RIs for key biochemical and haematological parameters, including BAs, have been established for the first time in the population of Croatian pregnant women.
Collapse
Affiliation(s)
- Lara Zorić
- Department of Medical Laboratory Diagnostics, 119195 University Hospital "Sveti Duh" , Zagreb, Croatia
| | - Petra Glad Štritof
- Department of Obstetrics and Gynecology, 119195 University Hospital "Sveti Duh" , Zagreb, Croatia
| | - Helena Čičak
- Department of Medical Laboratory Diagnostics, 119195 University Hospital "Sveti Duh" , Zagreb, Croatia
| | - Paulo Zekan
- Department of Obstetrics and Gynecology, 119195 University Hospital "Sveti Duh" , Zagreb, Croatia
| | - Maria Gotić Pavasović
- Department of Obstetrics and Gynecology, 119195 University Hospital "Sveti Duh" , Zagreb, Croatia
| | - Vladimir Blagaić
- Department of Obstetrics and Gynecology, 119195 University Hospital "Sveti Duh" , Zagreb, Croatia
| | - Miran Čoklo
- Centre for Applied Bioanthropology, 162067 Institute for Anthropological Research , Zagreb, Croatia
| | - Ana-Maria Šimundić
- Department of Medical Laboratory Diagnostics, 119195 University Hospital "Sveti Duh" , Zagreb, Croatia
- Faculty of Pharmacy and Biochemistry, 119195 University of Zagreb , Zagreb, Croatia
| | - Lora Dukić
- Department of Medical Laboratory Diagnostics, 119195 University Hospital "Sveti Duh" , Zagreb, Croatia
| |
Collapse
|
3
|
Loh TP, Cooke BR, Tran TCM, Markus C, Zakaria R, Ho CS, Theodorsson E, Greaves RF. The LEAP checklist for laboratory evaluation and analytical performance characteristics reporting of clinical measurement procedures. Ann Clin Biochem 2024; 61:3-7. [PMID: 37838926 DOI: 10.1177/00045632231206029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2023]
Abstract
Reporting a measurement procedure and its analytical performance following method evaluation in a peer-reviewed journal is an important means for clinical laboratory practitioners to share their findings. It also represents an important source of evidence base to help others make informed decisions about their practice. At present, there are significant variations in the information reported in laboratory medicine journal publications describing the analytical performance of measurement procedures. These variations also challenge authors, readers, reviewers and editors in deciding the quality of a submitted manuscript. The International Federation of Clinical Chemistry and Laboratory Medicine Working Group on Method Evaluation Protocols (IFCC WG-MEP) developed a checklist and recommends its adoption to enable a consistent approach to reporting method evaluation and analytical performance characteristics of measurement procedures in laboratory medicine journals. It is envisioned that the LEAP checklist will improve the standardisation of journal publications describing method evaluation and analytical performance characteristics, improving the quality of the evidence base that is relied upon by practitioners.
Collapse
Affiliation(s)
- Tze Ping Loh
- Department of Laboratory Medicine, National University Hospital, Singapore
| | - Brian R Cooke
- Department of Clinical Biochemistry, PathWest Laboratory Medicine, Fiona Stanley Hospital, Murdoch, Western Australia
| | - Thi Chi Mai Tran
- Faculty of Medical Technology, Hanoi Medical University, Vietnam
- Department of Clinical Biochemistry, National Children's Hospital, Hanoi, Vietnam
| | - Corey Markus
- Flinders University International Centre for Point-of-Care Testing, Flinders Health and Medical Research Institute, Adelaide, Australia
| | - Rosita Zakaria
- School of Health and Biomedical Sciences, RMIT University, Melbourne, VIC, Australia
- Murdoch Children's Research Institute, Parkville, VIC, Australia
| | - Chung Shun Ho
- Biomedical Mass Spectrometry Unit, Department of Chemical Pathology, The Chinese University of Hong Kong, Hong Kong
| | - Elvar Theodorsson
- Department of Biomedical and Clinical Sciences, Division of Clinical Chemistry and Pharmacology, Linkoping University, Linkoping, Sweden
| | - Ronda F Greaves
- Department of Paediatrics, The University of Melbourne, Parkville, VIC, Australia
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Parkville, VIC, Australia
| |
Collapse
|
4
|
Loh TP, Cooke BR, Tran TCM, Markus C, Zakaria R, Ho CS, Theodorsson E, Greaves RF. The LEAP checklist for Laboratory Evaluation and Analytical Performance Characteristics reporting of clinical measurement procedures. Scand J Clin Lab Invest 2023; 83:467-469. [PMID: 37838359 DOI: 10.1080/00365513.2023.2261098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 09/17/2023] [Indexed: 10/16/2023]
Abstract
Reporting a measurement procedure and its analytical performance following method evaluation in a peer-reviewed journal is an important means for clinical laboratory practitioners to share their findings. It also represents an important source of evidence base to help others make informed decisions about their practice. At present, there are significant variations in the information reported in laboratory medicine journal publications describing the analytical performance of measurement procedures. These variations also challenge authors, readers, reviewers, and editors in deciding the quality of a submitted manuscript.The International Federation of Clinical Chemistry and Laboratory Medicine Working Group on Method Evaluation Protocols (IFCC WG-MEP) developed a checklist and recommends its adoption to enable a consistent approach to reporting method evaluation and analytical performance characteristics of measurement procedures in laboratory medicine journals. It is envisioned that the LEAP checklist will improve the standardisation of journal publications describing method evaluation and analytical performance characteristics, improving the quality of the evidence base that is relied upon by practitioners.
Collapse
Affiliation(s)
- Tze Ping Loh
- Department of Laboratory Medicine, National University Hospital, Singapore, Singapore
| | - Brian R Cooke
- Department of Clinical Biochemistry, PathWest Laboratory Medicine, Fiona Stanley Hospital, Murdoch, Western Australia
| | - Thi Chi Mai Tran
- Faculty of Medical Technology, Hanoi Medical University, Hanoi, Vietnam
- Department of Clinical Biochemistry, National Children's Hospital, Hanoi, Vietnam
| | - Corey Markus
- Flinders University International Centre for Point-of-Care Testing, Flinders Health and Medical Research Institute, Adelaide, Australia
| | - Rosita Zakaria
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Victoria, Australia
- Murdoch Children's Research Institute, Parkville, Victoria, Australia
| | - Chung Shun Ho
- Biomedical Mass Spectrometry Unit, Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong
| | - Elvar Theodorsson
- Department of Biomedical and Clinical Sciences, Division of Clinical Chemistry and Pharmacology, Linkoping University, Linkoping, Sweden
| | - Ronda F Greaves
- Department of Paediatrics, The University of Melbourne, Parkville, Victoria, Australia
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Parkville, Victoria, Australia
| |
Collapse
|
5
|
Loh TP, Cooke BR, Tran TCM, Markus C, Zakaria R, Ho CS, Theodorsson E, Greaves RF. The LEAP checklist for laboratory evaluation and analytical performance characteristics reporting of clinical measurement procedures. Biochem Med (Zagreb) 2023; 33:030505. [PMID: 37841772 PMCID: PMC10564153 DOI: 10.11613/bm.2023.030505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 09/18/2023] [Indexed: 10/17/2023] Open
Abstract
Reporting a measurement procedure and its analytical performance following method evaluation in a peer-reviewed journal is an important means for clinical laboratory practitioners to share their findings. It also represents an important source of evidence base to help others make informed decisions about their practice. At present, there are significant variations in the information reported in laboratory medicine journal publications describing the analytical performance of measurement procedures. These variations also challenge authors, readers, reviewers, and editors in deciding the quality of a submitted manuscript. The International Federation of Clinical Chemistry and Laboratory Medicine Working Group on Method Evaluation Protocols (IFCC WG-MEP) developed a checklist and recommends its adoption to enable a consistent approach to reporting method evaluation and analytical performance characteristics of measurement procedures in laboratory medicine journals. It is envisioned that the Laboratory Evaluation and Analytical Performance Characteristics (LEAP) checklist will improve the standardisation of journal publications describing method evaluation and analytical performance characteristics, improving the quality of the evidence base that is relied upon by practitioners.
Collapse
Affiliation(s)
- Tze Ping Loh
- Department of Laboratory Medicine, National University Hospital, Singapore, Singapore
| | - Brian R Cooke
- Department of Clinical Biochemistry, PathWest Laboratory Medicine, Fiona Stanley Hospital, Murdoch, Australia
| | - Thi Chi Mai Tran
- Faculty of Medical Technology, Hanoi Medical University, Hanoi, Vietnam
- Department of Clinical Biochemistry, National Children’s Hospital, Hanoi, Vietnam
| | - Corey Markus
- Flinders University International Centre for Point-of-Care Testing, Flinders Health and Medical Research Institute, Adelaide, Australia
| | - Rosita Zakaria
- RMIT University, School of Health and Biomedical Sciences, Victoria, Australia
- Murdoch Children’s Research Institute, Melbourne, Australia
| | - Chung Shun Ho
- Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong
| | - Elvar Theodorsson
- Department of Biomedical and Clinical Sciences, Division of Clinical Chemistry and Pharmacology, Linkoping University, SE-58183 Linkoping, Sweden
| | - Ronda F Greaves
- Department of Paediatrics, The University of Melbourne, Melbourne, Australia
- Victorian Clinical Genetics Services, Murdoch Children’s Research Institute, Parkville, Australia
| |
Collapse
|
6
|
Loh TP, Cooke BR, Tran TCM, Markus C, Zakaria R, Ho CS, Theodorsson E, Greaves RF. The LEAP checklist for laboratory evaluation and analytical performance characteristics reporting of clinical measurement procedures. Clin Chem Lab Med 2023:cclm-2023-0933. [PMID: 37838925 DOI: 10.1515/cclm-2023-0933] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 08/24/2023] [Indexed: 10/16/2023]
Abstract
Reporting a measurement procedure and its analytical performance following method evaluation in a peer-reviewed journal is an important means for clinical laboratory practitioners to share their findings. It also represents an important source of evidence base to help others make informed decisions about their practice. At present, there are significant variations in the information reported in laboratory medicine journal publications describing the analytical performance of measurement procedures. These variations also challenge authors, readers, reviewers, and editors in deciding the quality of a submitted manuscript. The International Federation of Clinical Chemistry and Laboratory Medicine Working Group on Method Evaluation Protocols (IFCC WG-MEP) developed a checklist and recommends its adoption to enable a consistent approach to reporting method evaluation and analytical performance characteristics of measurement procedures in laboratory medicine journals. It is envisioned that the LEAP checklist will improve the standardisation of journal publications describing method evaluation and analytical performance characteristics, improving the quality of the evidence base that is relied upon by practitioners.
Collapse
Affiliation(s)
- Tze Ping Loh
- Department of Laboratory Medicine, National University Hospital, Singapore, Singapore
| | - Brian R Cooke
- Department of Clinical Biochemistry, PathWest Laboratory Medicine, Fiona Stanley Hospital, Murdoch, WA, Australia
| | - Thi Chi Mai Tran
- Faculty of Medical Technology, Hanoi Medical University, Hanoi, Vietnam
- Department of Clinical Biochemistry, National Children's Hospital, Hanoi, Vietnam
| | - Corey Markus
- Flinders University International Centre for Point-of-Care Testing, Flinders Health and Medical Research Institute, Adelaide, Australia
| | - Rosita Zakaria
- RMIT University, School of Health and Biomedical Sciences, Melbourne, VIC, Australia
- Murdoch Children's Research Institute, Parkville, VIC, Australia
| | - Chung Shun Ho
- Biomedical Mass Spectrometry Unit, Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, NT, Hong Kong
| | - Elvar Theodorsson
- Department of Biomedical and Clinical Sciences, Division of Clinical Chemistry and Pharmacology, Linkoping University, Linkoping, Sweden
| | - Ronda F Greaves
- Department of Paediatrics, The University of Melbourne, Melbourne, VIC, Australia
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Parkville, Victoria, Australia
| |
Collapse
|
7
|
Li J, Xia X, Shi C, Chen X, Tang H, Deng L. A Reliable Method for Determining the Degree of Orientation of Fibrous Foods Using Laser Transmission and Computer Vision. Foods 2023; 12:3541. [PMID: 37835194 PMCID: PMC10572238 DOI: 10.3390/foods12193541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/14/2023] [Accepted: 09/19/2023] [Indexed: 10/15/2023] Open
Abstract
The degree of organised alignment of fibre structures, referred to as the degree of orientation, significantly influences the textural properties and consumer acceptance of fibrous foods. To develop a new method to quantitatively characterise the fibre structure of such foods, a laser transmission imaging system is constructed to capture the laser beam spot on a sample, and the resulting image undergoes a series of image processing steps that use computer vision to translate the light and dark variations of the original images into distinct ellipses. The results show that the degree of orientation can be reasonably calculated from the ellipse obtained by fitting the outermost isopixel points. To validate the reliability of the newly developed method, we determine the degree of orientation of typical fibrous foods (extruded beef jerky, pork jerky, chicken jerky, and duck jerky). The ranking of the measured orientation agrees with the results of pseudocolour maps and micrographs, confirming the ability of the method to distinguish different fibrous foods. Furthermore, the relatively small coefficients of variation and the strong positive correlation between the degree of organisation and the degree of orientation confirm the reliability of this newly developed method.
Collapse
Affiliation(s)
| | | | | | | | | | - Li Deng
- Key Laboratory of Agricultural and Animal Products Storage and Processing of Guizhou Province, School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China; (J.L.); (X.X.); (C.S.); (X.C.); (H.T.)
| |
Collapse
|
8
|
Top ZN, Tiryaki O, Polat B. Monitoring and environmental risk assessment of agricultural fungicide and insecticides in water, sediment from Kumkale Plain, Çanakkale-Turkey. J Environ Sci Health B 2023; 58:304-315. [PMID: 36911984 DOI: 10.1080/03601234.2023.2187598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
This study was conducted to assess pesticide residues in 34 water and sediment samples taken from Kumkale Plain of Çanakkale-Turkey. Residue analyses were performed with the use of Quick-Easy-Cheap-Efficient-Rugged-Safe (QuEChERS)-liquid chromatography/tandem mass spectrometry (LC-MS/MS) procedure. For method verification, blank sediment and water samples were spiked at two limits of quantification (LOQ) levels of the pesticides. Overall recovery was 81.66% for sediment and 91.50% for water samples. In sediment samples, chlorpyrifos-M had the highest concentration, pyridaben was encountered in the majority of the samples (15 samples) and the highest number of pesticides (35) was seen in sample no. s13. In water samples, methoxyfenozide had the greatest concentration, metalaxyl was encountered in the highest number of samples (three samples) and the highest number of pesticide (8) was seen in sample no.w13. Sample no. s13 and w13 were taken from around the fountain basin. Pyraclostrobin and chlorantraniliprole residues exceeded the national limits set for water. In terms of hazard quotient (HQ), pesticides in sediment and waters were found to be safe. Despite the safe nature of pesticide on samples, greater attention has been paid on toxicity of the residues. It was concluded that authorities should put strict regulations on agrochemicals to reduce health risks of these chemicals.
Collapse
Affiliation(s)
- Zübeyde Nur Top
- Department of Plant Protection, School of Graduate Studies, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Osman Tiryaki
- Department of Plant Protection, Faculty of Agriculture, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Burak Polat
- Department of Plant Protection, Faculty of Agriculture, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| |
Collapse
|
9
|
Lefeuvre C, Pivert A, Tran CT, Lunel-Fabiani F, Ducancelle A, Le Guillou-Guillemette H. Practical approach to method verification in plasma and validation in cerebrospinal fluid under accreditation using a flexible scope in molecular virology: setting up the HIV, HBV and HCV Aptima™ Quant Dx assays. Clin Chem Lab Med 2021; 58:251-260. [PMID: 31539347 DOI: 10.1515/cclm-2019-0502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 08/22/2019] [Indexed: 12/11/2022]
Abstract
Background Our laboratory obtained the ISO 15189 accreditation for the plasmatic HIV-1, HBV and HCV viral load (VL) using the m2000 RealTime™ system, which was recently changed for the platform Panther®. Here, we discuss a strategy for performing method validation/verification very quickly. Methods We performed the mandatory (repeatability, internal quality assessment [IQA], measurement uncertainty [MU]) and optional technical verifications for CE/IVD assays using the flexible scope range A. We also performed the mandatory assays for the validation of HIV-1 VL in the cerebrospinal fluid (CSF) using the flexible scope range B. The change was checked by following up on the turnaround time (TAT). Results The coefficient of variation (CV%) for repeatability and IQA complied with the limit of 0.25 log. The MU results ranged from 0.04 to 0.25 log copies or IU/mL. The comparisons of methods showed excellent correlations (R2 = 0.96 for the three parameters) but a delayed centrifugation on HCV VL showed variations of up to 2 log IU/mL. An excellent linearity for HIV-1 in the CSF was obtained from 1.5 to 5 log copies/mL with R2 = 0.99. The TAT increased (84%-98%) in routine usage. Conclusions The three Aptima assays are well suited for routine laboratory use and can be integrated within less than 2 weeks in accordance with flexible scope range A. Our data allows us to confidently perform HIV-1 VL in CSF following flexible scope range B. Finally, we provide an organizational guide for flexible scope management in molecular virology within a short time frame.
Collapse
Affiliation(s)
- Caroline Lefeuvre
- Virology Department, Angers University Hospital, HIFIH Laboratory EA 3859, LUNAM, Angers, France
| | - Adeline Pivert
- Virology Department, Angers University Hospital, HIFIH Laboratory EA 3859, LUNAM, Angers, France
| | - Cong T Tran
- Virology Department, Angers University Hospital, HIFIH Laboratory EA 3859, LUNAM, Angers, France
| | - Françoise Lunel-Fabiani
- Virology Department, Angers University Hospital, HIFIH Laboratory EA 3859, LUNAM, Angers, France
| | - Alexandra Ducancelle
- Virology Department, Angers University Hospital, HIFIH Laboratory EA 3859, LUNAM, Angers, France
| | | |
Collapse
|
10
|
Abstract
Background Globally, all medical laboratories seeking accreditation should meet international quality standards to perform certain specific tests. Quality management program provides disciplines targeted to ensure that quality standards have been implemented by a laboratory in order to generate correct results. The hallmark of the accreditation process is method verification and quality assurance. Before introducing a new method in your laboratory, it is important to assess certain performance characteristics that reflect the concept of method verification. Methods In this review, we illustrated how to verify the performance characteristics of a new method according to the recent guidelines. It includes an assessment of precision, trueness, analytical sensitivity, detection limits, analytical specificity, interference, measuring range, linearity, and measurement uncertainty. Conclusions Although the presence of several updated guidelines used to determine the performance characteristics of new methods in clinical chemistry laboratories, the real practice raised several concerns with the application of these guidelines which in need for further consideration in the upcoming updates of these guidelines.
Collapse
Affiliation(s)
| | - Muhammad I El-Masry
- Kafr El-sheikh University, Faculty of Medicine, Departments of Clinical Pathology, Egypt
| |
Collapse
|