Journals / Journal of Clinical and Experimental Investigations / 2010 / Cilt: 1 - Sayı: 3

Orta yaş ve yaşlı bir populasyonda immunoassay analizörle tiroid hormon referans aralıklarını belirlemek için direkt ve indirekt yöntemler

Direct versus indirect strategies for thyroid hormone reference intervals established in a middle-aged and elderly population on an immunoassay analyzer

Pages
161–167
Publication Date
2022-10-18
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

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

We suggested the utilization of a very simple and practical way, indirect sampling strategy, for evaluating reference intervals for elderly population.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Objectives: Establishment of reference values by direct strategy for selection of reference individuals is time-consuming and expensive for laboratories.
📊
Key Findings & Data:The aim of this study was to establish reference intervals for thyrotrophin(TSH), free thyroxine (FT4), free triiodothyronine (FT3) in a middle-aged and elderly population (age range; 40-80 years) on an immunoassay analyzer using both direct and indirect strategies, and to compare the results of direct and indirect strategies.
💡
Conclusion & Impact:We suggested the utilization of a very simple and practical way, indirect sampling strategy, for evaluating reference intervals for elderly population.
🔬Design:Survey & Empirical Study
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objectives: Establishment of reference values by direct strategy for selection of reference individuals is time-consuming and expensive for laboratories. The aim of this study was to establish reference intervals for thyrotrophin(TSH), free thyroxine (FT4), free triiodothyronine (FT3) in a middle-aged and elderly population (age range; 40-80 years) on an immunoassay analyzer using both direct and indirect strategies, and to compare the results of direct and indirect strategies. Materials and methods: As for direct sampling strategy, healthy reference individuals were randomly selected (129 male, 131 female; age range: 40-80) by questionnaire. As for indirect sampling strategy, the results of TSH, FT3, FT4 measurements of all individuals (male, n=3060-3920; female, n=4090-4520; age range 40-80 years), were selected from laboratory information system. Reference intervals were calculated by nonparametric methodsResults: The following 95% reference intervals were determined: For direct sampling group: TSH 0.32-4.38 µIU/mL; FT4 0.75-1.32 ng/dL; FT3 1.98-3.65 pg/mL. For indirect sampling group: TSH 0.29-4.36 µIU/mL; FT4 0.71-1.37 ng/dL; FT3 1.69-3.32 pg/mL. Indirect sampling group showed a good concordance in the reference intervals for TSH and FT4 with direct sampling group. Conclusion: Indirect sampling strategy and nonparametric method may be confidently used to evaluate the reference intervals of serum TSH and FT4 on an analyzer. We suggested the utilization of a very simple and practical way, indirect sampling strategy, for evaluating reference intervals for elderly population.

Özet

Amaç: Referans bireylerden direkt yöntemle referans değerleri belirlemek her laboratuvar için hem zaman alıcı hem de maliyetli olmaktadır. Bu çalışmanın amacı, orta ve yaşlı populasyonun (yaş aralığı; 40-80 yaş) tirotropin (TSH), serbest tiroksin (ST4), serbest triiyodotironin (ST3) değerleri için Abbott Architect i2000 immunoassay analizöründe referans aralıklarını belirlemek ve indirekt ve direkt yöntem sonuçlarını birbiriyle karşılaştırmak.Yöntem: Direkt yöntem için referans bireyler (129 erkek, 131 kadın; yaş aralığı: 40-80) anket formuyla seçildi. İndirekt yöntem için TSH, ST4, ST3 ölçüm sonuçları laboratuar bilgi sisteminden [erkek n=(3060-3920), kadın n=(4090-4520) yaş aralığı:40-80 yıl] elde edildi. Referans aralıklar nonparametrik metod ile hesaplandı.Bulgular: %95 merkezi alan temel alınarak referans aralıkları belirlendi. Direkt yöntem grubunda; TSH, 0.32-4.38 µIU/mL; ST4, 0.75-1.32 ng/dL; ST3, 1.98-3.65 pg/mL idi. İndirekt yöntem grubunda; TSH, 0.29-4.36 µIU/mL; ST4, 0.71-1.37 ng/dL; ST3, 1.69-3.32 pg/mL idi. İndirekt yöntem grubu TSH ve ST4 için direkt yöntem grubuyla çok iyi bir uyum gösterdi.Sonuç: İndirekt yöntem ve nonparametrik metod Abbott Architect i2000 analizöründe TSH ve FT4 referans aralıkları belirlemede güvenli olarak kullanılabilir. Biz ilgilenilen bölgesel populasyonun referans aralıklarını belirlemek için indirekt yöntemle basit ve pratik bir yol öneriyoruz.

🔖

Cite This Article

ERDOĞAN, S., ERDEN, G., MOTOR, S., YILDIRIMKAYA, M. M., SALİHLİOĞLU, B. (2022). Orta yaş ve yaşlı bir populasyonda immunoassay analizörle tiroid hormon referans aralıklarını belirlemek için direkt ve indirekt yöntemler. Journal of Clinical and Experimental Investigations, Cilt: 1 - Sayı: 3, 161–167. https://ajindex.com/articles/562061

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (12)

  1. Solberg HE. The IFCC recommendation on estimation of refernce intervals. The Referral Program. Clin Chem Lab Med 2004;42:710-4
  2. Gonzales-Sagrado M, Martin-Gil FJ. Population-specific reference values for thyroid hormones on the Abbott ARCHITECT i2000 analyzer. Clin Chem Lab Med. 2004;42:540-2
  3. Burtis CA, Ashwood ER, Bruns DE. Establishment and use of reference values.In: Solberg HE. Tietz Textbook of Clinical Chemistry and Molecular Diagnostics, fourth ed. Elsevier Saunders, 2005:425-448
  4. International Federation of Clinical Chemistry, Expert Panel on Theory of Reference Values. Approved recommendation on the theory of reference values. Part 1. The concept of reference values. J Clin Chem Clin Biochem 1987;25:337-42
  5. International Federation of Clinical Chemistry, Expert Panel on Theory of Reference Values. Approved recommendation on the theory of reference values. Part 2. Selection of individuals for the production of reference values. J Clin Chem Clin Biochem. 1987;25:639-44
  6. Solberg HE. International Federation of Clinical Chemistry, Expert Panel on Theory of Reference Values, and International Committee for standardization in Haematology, Standing Committee for reference values. Approved recommendation on the theory of reference values. Part 5.Statistical treatment of collected reference values. J Clin Chem Clin Biochem 1987; 25:645-56
  7. Kratzsch J, Fiedler GM, Leichtle A, et al. New reference intervals for thyrotropin and thyroid hormones based on National Academy of Clinical Biochemistry criteria and regular ultrasonography of the thyroid. Clin Che. 2005;51:1480-86
  8. Grasbeck R, Alström T. Reference values in laboratory medicine. The current state of the art. Chichester, England: John Wiley, 1981
  9. Baadenhuijsen H, Smit JC. Indirect estimation of clinical chemical reference intervals from total hospital patient data: Application of a modified Bhattacharya procedure. J Clin Chem Clin Biochem 1985;23:829-39
  10. Hubl W, Schmieder J, Gladrow E, Demant T. Reference intervals for thyroid hormones on the Architect analyzer. Clin Chem Lab Med 2002;40:165-6
  11. Dhatt GS, Griffin G, Agarwal MM. Thyroid hormone reference intervals in an ambulatory Arab population on the Abbott Architect i2000 immunoassay analyzer. Clin Chim Acta 2006; 364:226-9
  12. Zöphel K, Wunderlich G, Kotzerke J. Should we really determine a reference population for the definition of thyroid-stimulating hormone reference interval? Clin Chem 2006;52:329-30