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- W2924867079 abstract "ABSTRACT: Background: The antiquated standard reference range of 0.15–0.45 g/L for cerebrospinal fluid total protein (CSF-TP) is well entrenched in medical literature and laboratory operating procedures across the world. Methods: We conducted a web-based survey with a response rate of 34.9% through the listserv of the Canadian Neurological Sciences Federation. Additional laboratory reference data were collated by telephone interview of hospital laboratory technologists across Canada. Results: A total of 142 site responses were obtained: 64.1% from academic/tertiary hospitals and 35.9% from community hospitals. A strong majority (80.4%) of both types of institutions reported using a CSF-TP upper reference limit of 0.45 g/L or less. As a rule, no age adjustments were implemented in CSF-TP-level interpretation. Conclusions: Recent well-powered laboratory reference studies have documented CSF-TP upper reference limits that are above 0.6 g/L starting at age 50, with incremental limits partitioned by subsequent decades of age. The conventional 0.45 g/L limit could lead to false positive results. Our survey suggests there is a need to consider a wide adoption of data-driven, rather than historical, reference values." @default.
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- W2924867079 date "2019-03-27" @default.
- W2924867079 modified "2023-10-16" @default.
- W2924867079 title "A Survey of Cerebrospinal Fluid Total Protein Upper Limits in Canada: Time for an Update?" @default.
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- W2924867079 doi "https://doi.org/10.1017/cjn.2019.12" @default.
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