Journals / Türk Klinik Biyokimya Dergisi / 2016 / Cilt: 14 - Sayı: 3

Analytical Performance of Immuno Assay Method of 25 Hydroxy Vitamin D

25-Hidroksi Vitamin D İmmun Ölçüm Yönteminin Analitik Performansı

Pages
181–188
Publication Date
2022-11-05
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

In addition, participation in laboratories' external quality assessment programs and their assessment of results will provide significant contributions to the use of laboratory findings for patient benefit.

📌 3 Key Takeaways

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Objective & Hypothesis:Aim: Method evaluation studies should be carried out for every new method planned to be used in laboratories.
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Key Findings & Data:The aim of this study is to determine the analytical performance of the immunoassay method used for determining of plasma 25-hydroxy vitamin D levels and also to compare to high performance liquid chromatography (HPLC) method.
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Conclusion & Impact:In addition, participation in laboratories' external quality assessment programs and their assessment of results will provide significant contributions to the use of laboratory findings for patient benefit.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Aim: Method evaluation studies should be carried out for every new method planned to be used in laboratories. The aim of this study is to determine the analytical performance of the immunoassay method used for determining of plasma 25-hydroxy vitamin D levels and also to compare to high performance liquid chromatography (HPLC) method. Materials and Methods: 113 plasma samples were used to carry out repeatability, linearity and recovery studies for 25-hydroxy vitamin D measurement with the Abbott Architect chemiluminescence immunoassay (CLIA) method. HPLC was accepted as reference method. Method comparison study was carried out. Results: The coefficient of variations for the Architect 25-hydroxy vitamin D method were 4.07% and 2.42 % within-day; 4.77% and 3.93% between-day for low and intermediate plasma levels respectively. The results obtained from the recovery studies were 92.5% and 105.9% for low levels; and 108.3% and 105.5% for intermediate levels. As a result of the method comparison study, Architect method was found to have a significant negative bias [As mean, 9 ng/mL lower, ±2SD interval: (-34.1) - (16.1) ng/mL] and it was also observed that there was a constant and proportional difference between that two methods (HPLC= -3.2657 + 1.7388 CLIA; rho= 0.656). Conclusion: Architect 25-hydroxy vitamin D method has met the precision, linearity and recovary targets but not the bias targets. For the accurate diagnosis and treatment follow-up of Vitamin D deficiency, it is obvious that to carry out analytical performance studies and to standardize of the measurement methods are essential. As the use of standard reference materials developed for the standardization of vitamin methods becomes widespread, the inter-method variability will also decrease. In addition, participation in laboratories' external quality assessment programs and their assessment of results will provide significant contributions to the use of laboratory findings for patient benefit.

Özet

Amaç: Laboratuvarlarda uygulanması düşünülen her yeni yöntemin, analitik hata oranları belirlenmeli ve yöntem değerlendirme çalışmaları yapılmalıdır. Bu çalışmanın amacı; 25-hidroksi vitamin D immün ölçüm yönteminin analitik performansını belirlemek ve yüksek performanslı sıvı kromatografi yöntemi ile karşılaştırmaktır. Gereç ve Yöntem: 113 plazma örneği kullanılarak kemiluminesans immün ölçüm esaslı Abbott Architect 25-OH Vitamin D yöntemi için tekrarlanabilirlik, linearite ve geri elde çalışmaları yapıldı. Yüksek performanslı sıvı kromatografi referans yöntem olarak kabul edildi. Yöntem karşılaştırma çalışması yapıldı. Bulgular: Architect 25-OH Vitamin D yöntemine ait varyasyon katsayıları sırasıyla düşük ve orta seviyeli serumlar için gün içi %4.07 ve %2.42; günler arası %4.77 ve %3.93 olarak bulundu. Geri elde çalışmalarında geri elde edilen miktar düşük seviyelerde %92.5 ve %105.9; orta seviyelerde %108.3 ve %105.5 bulundu. Yöntem karşılaştırma çalışması sonucunda, Architect yönteminin önemli düzeyde negatif bias (ortalama 9 ng/mL daha düşük; ±2SD aralığı: (-34.1) - (16.1) ng/mL) gösterdiği ve iki metot arasında hem sabit hem de orantısal fark (Yüksek performanslı sıvı kromatografi= -3.2657 + 1.7388 kemiluminesans immün ölçüm; rho= 0.656) olduğu gözlendi. Sonuç: Architect 25-OH Vitamin D yönteminin tekrarlanabilirlik, linearite ve geri elde hedeflerini karşıladığı halde bias hedeflerini karşılayamadığı görülmüştür. D vitamini eksikliği tanısı ve tedavi takibinin doğrulukla yapılması için ölçümlerin analitik performans çalışmalarının yapılması ve yöntemlerin standardizasyonunun gerekliliği aşikardır. 25-OH Vit D yöntemlerinin standardizasyonu için geliştirilen standart referans materyallerin kullanımı yaygınlaştıkça metotlar arası değişkenlik de azalacaktır. Ayrıca laboratuvarların dış kalite değerlendirme programlarına katılmaları ve sonuçlarını değerlendirmeleri laboratuvar bulgularının hasta yararına kullanımı konusunda önemli katkılar sağlayacaktır.

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Cite This Article

YILDIRMAK, S., URAS, A. R., KULAN, P., DURMUŞCAN, M., DELİBAŞ, S. (2022). Analytical Performance of Immuno Assay Method of 25 Hydroxy Vitamin D. Türk Klinik Biyokimya Dergisi, Cilt: 14 - Sayı: 3, 181–188. https://ajindex.com/articles/634415

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