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Favaloro EJ, Mohammed S, Vong R, Chapman K, Swanepoel P, Kershaw G, Cai N, Just S, Connelly L, Brighton T, Pasalic L. A multi-laboratory assessment of lupus anticoagulant assays performed on the ACL TOP 50 family for harmonized testing in a large laboratory network. Int J Lab Hematol 2022; 44:654-665. [PMID: 35234361 PMCID: PMC9311435 DOI: 10.1111/ijlh.13818] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 02/17/2022] [Indexed: 12/23/2022]
Abstract
Introduction Lupus anticoagulant (LA) testing is commonly performed within hemostasis laboratories, and the ACL TOP 50 family of instruments represent a new “single platform” of hemostasis instrumentation. Our aim was to evaluate these instruments and manufacturer reagents or alternatives for utility in LA testing. Methods Comparative evaluations of LA testing using newly installed ACL TOPs 550 and 750 as well as comparative assessments with existing “reference,” predominantly Stago, instrumentation, and reagents. Evaluations comprised both dilute Russell viper venom time (dRVVT) and activated partial thromboplastin time (APTT)‐based assays. Establishment of normal reference ranges (NRR). Results The HemosIL dRVVT‐based assays showed good comparability with the existing Stago reference method (R > 0.9) and could be considered as verified as fit for purpose. A variety of APTT assays was additionally evaluated for LA utility, and we identified from the assessment good utility of a non‐Werfen solution in Hyphen BioMed Cephen reagents. NRR were established based on ≥120 normal individual plasma samples. Conclusion This evaluation of LA reagents on ACL TOP 50 Family instruments identified overall acceptable performance of both dRVVT (Werfen solution) and APTT (non‐Werfen solution) to enable harmonization of LA testing in our large network.
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Affiliation(s)
- Emmanuel J Favaloro
- Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital, Westmead, New South Wales, Australia.,Sydney Centres for Thrombosis and Haemostasis, Westmead, New South Wales, Australia.,Faculty of Science and Health, Charles Sturt University, Wagga Wagga, New South Wales, Australia
| | - Soma Mohammed
- Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital, Westmead, New South Wales, Australia
| | - Ronny Vong
- Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital, Westmead, New South Wales, Australia
| | - Kent Chapman
- Haematology, NSW Health Pathology, John Hunter Hospital, Newcastle, New South Wales, Australia
| | - Priscilla Swanepoel
- Haematology, NSW Health Pathology, John Hunter Hospital, Newcastle, New South Wales, Australia
| | - Geoffrey Kershaw
- Haematology, NSW Health Pathology, Prince Alfred Hospital, Camperdown, New South Wales, Australia
| | - Nancy Cai
- Haematology, NSW Health Pathology, Prince Alfred Hospital, Camperdown, New South Wales, Australia
| | - Sarah Just
- Haematology, NSW Health Pathology, Royal North Shore Hospital, St Leonards, New South Wales, Australia
| | - Lynne Connelly
- Haematology, NSW Health Pathology, Royal North Shore Hospital, St Leonards, New South Wales, Australia
| | - Timothy Brighton
- Haematology, NSW Health Pathology, Prince of Wales Hospital, Randwick, New South Wales, Australia
| | - Leonardo Pasalic
- Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital, Westmead, New South Wales, Australia.,Sydney Centres for Thrombosis and Haemostasis, Westmead, New South Wales, Australia.,University of Sydney, Westmead, New South Wales, Australia
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