Determination of a Beckman Coulter AU turbidometric method-specific caeruloplasmin reference interval.

Abstract:

BACKGROUND:Method-dependent variation of caeruloplasmin measurement is significant and necessitates the requirement for assay-specific reference intervals. Local determination becomes necessary in the absence of suitable published or manufacturer-quoted reference intervals. METHODS:Applicability of the Beckman Coulter AU-quoted reference interval was determined by assay of 20 surplus serum samples from patients attending the medical renal stones clinic at University Hospital Southampton. Subsequently, 60 additional samples were collected for local reference interval determination. Samples were analysed for caeruloplasmin using the Beckman Coulter AU turbidometric kit on an AU680 analyser. Outliers were removed, and non-parametric rank analysis of the results was performed. RESULTS:The Beckman Coulter-quoted reference interval of 200-600 mg/L was unsuitable with 40% of the verification samples falling below 200 mg/L. A caeruloplasmin reference interval of 150-320 mg/L was established. CONCLUSION:Users should be aware the quoted Beckman Coulter AU turbidometric reference interval may not be appropriate. We have established a method-specific adult reference interval for routine use.

journal_name

Ann Clin Biochem

authors

Kaye OE,Cook P

doi

10.1177/0004563221989360

subject

Has Abstract

pub_date

2021-01-27 00:00:00

pages

4563221989360

eissn

0004-5632

issn

1758-1001

pub_type

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