Andreasson, Ulf;
Gobom, Johan;
Delatour, Vincent;
Auclair, Guy;
Noam, Yoav;
Lee, Stephen;
Wen, Jason;
... Blennow, Kaj; + view all
(2023)
Assessing the commutability of candidate reference materials for the harmonization of neurofilament light measurements in blood.
Clinical Chemistry and Laboratory Medicine (CCLM)
10.1515/cclm-2022-1181.
(In press).
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Abstract
OBJECTIVES: Neurofilament light chain (NfL) concentration in blood is a biomarker of neuro-axonal injury in the nervous system and there now exist several assays with high enough sensitivity to measure NfL in serum and plasma. There is a need for harmonization with the goal of creating a certified reference material (CRM) for NfL and an early step in such an effort is to determine the best matrix for the CRM. This is done in a commutability study and here the results of the first one for NfL in blood is presented. METHODS: Forty paired individual serum and plasma samples were analyzed for NfL on four different analytical platforms. Neat and differently spiked serum and plasma were evaluated for their suitability as a CRM using the difference in bias approach. RESULTS: The correlation between the different platforms with regards to measured NfL concentrations were very high (Spearman's ρ≥0.96). Samples spiked with cerebrospinal fluid (CSF) showed higher commutability compared to samples spiked with recombinant human NfL protein and serum seems to be a better choice than plasma as the matrix for a CRM. CONCLUSIONS: The results from this first commutability study on NfL in serum/plasma showed that it is feasible to create a CRM for NfL in blood and that spiking should be done using CSF rather than with recombinant human NfL protein.
| Type: | Article |
|---|---|
| Title: | Assessing the commutability of candidate reference materials for the harmonization of neurofilament light measurements in blood |
| Location: | Germany |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1515/cclm-2022-1181 |
| Publisher version: | https://doi.org/10.1515/cclm-2022-1181 |
| Language: | English |
| Additional information: | © 2023 the author(s), published by De Gruyter. This work is licensed under the Creative Commons Attribution 4.0 International License. |
| Keywords: | certified reference material, commutability, harmonization, neurofilament light |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Neurodegenerative Diseases |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10164677 |
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