The current status of lipoprotein (a) measurement in clinical biochemistry laboratories in the UK: Results of a 2021 national survey

Author:

Ansari Saleem12,Garmany Neely Robert D.3ORCID,Payne Jules4,Cegla Jaimini12ORCID

Affiliation:

1. Division of Diabetes, Endocrinology and Metabolism, Imperial College London, London, UK

2. Lipids and Cardiovascular Risk Service, Department of Cardiology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK

3. Academic Health Science Network for the North East and North Cumbria, Newcastle Upon Tyne, UK

4. Heart UK, Maidenhead, UK

Abstract

Background Lipoprotein(a) (Lp(a)) is now established as a causal risk factor for cardiovascular disease (CVD) and accurate laboratory measurement is of pivotal importance in reducing Lp(a) associated risk. The consensus statement by HEART UK in 2019 included recommendations to improve standardisation of clinical laboratory measurement and reporting of Lp(a). Methods A 16 question, electronic audit survey was circulated to 190 accredited clinical biochemistry laboratories to assess the adoption of these recommendations in the UK. Results Responses were received from 65 of 190 laboratories (34%). Only 5 (8%) did not offer Lp(a) measurement. Of those providing the test, 23% (n = 14) offered an in-house service (IHS), the remaining laboratories (77%; n = 46) used an external referral service (ERS). The majority (10 of 14 or 71%) of IHS laboratories responded with details of their method, stating whether it minimised sensitivity to the effect of Lp(a) isoform size and used calibrators certified for traceability to the WHO/IFCC reference material, however, only a minority ERS laboratories (13 of the 46 or 28%) were able to specify the method used by their referral laboratory. Of the laboratories who specified their reporting units, 6 of 10 IHS and 7 of 23 ERS laboratories reported in nmol/L. Among the 60 laboratories who responded, the HEART UK recommendations appear to have been adopted in full by only 3 IHS laboratories. Conclusions Further efforts are needed to standardise the measurement and reporting of Lp(a) so that results and interpretation are comparable across clinical biochemistry laboratories in the UK.

Funder

Novartis Pharmaceuticals UK Limited

Publisher

SAGE Publications

Subject

Clinical Biochemistry,General Medicine

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