Validation of an automated enzyme immunoassay for the measurement of serum total thyroxine in cats

© 2016 American Society for Veterinary Clinical Pathology.

Bibliographische Detailangaben
Veröffentlicht in:Veterinary clinical pathology. - 1975. - 45(2016), 1 vom: 01. März, Seite 148-53
1. Verfasser: Williams, Tim L (VerfasserIn)
Weitere Verfasser: Archer, Joy
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:Veterinary clinical pathology
Schlagworte:Journal Article Validation Study Analyzer feline human hyperthyroidism reference interval Thyroxine Q51BO43MG4
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500 |a Citation Status MEDLINE 
520 |a © 2016 American Society for Veterinary Clinical Pathology. 
520 |a BACKGROUND: Hyperthyroidism is common in older cats, which necessitates frequent screening of serum total thyroxine (TT4) concentrations. Fast, cheap, and reliable methods to measure TT4 in cats are needed 
520 |a OBJECTIVES: The purpose of the study was the validation of a human TT4 enzyme immunoassay (EIA) for use with feline serum, and derivation of a TT4 reference interval (RI) for cats aged 9 years and older 
520 |a METHODS: Assay precision, reproducibility, and linearity were evaluated. Interference by hemolysis was also assessed. Method comparison studies between the human EIA and a previously validated radioimmunoassay (RIA) and chemiluminescent-enzyme immunoassay (CEIA) were performed. Healthy cats (> 9 years) were recruited from 3 UK first opinion practices 
520 |a RESULTS: The human TT4 EIA demonstrated good precision and reproducibility, and adequate linearity. Hemolysis did not significantly alter measured TT4 concentrations until HGB > 8 g/L. Method comparison revealed proportional and constant errors between EIA and RIA/CEIA. The TT4 RI for cats (> 9 years) was calculated as 7.1-45.1 nmol/L (n = 49) 
520 |a CONCLUSIONS: The human TT4 EIA was successfully validated for use with feline serum and offers a rapid, cheap, and reliable method for determination of serum TT4 concentrations in cats 
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