Microplate ELISA for urine microalbumin: Reference values and results in patients with type 2 diabetes and cardiovascular disease

Tsu Lan Wu*, Pi Yueh Chang, Chia Chi Li, Kuo Chien Tsao, Chien Feng Sun, James T. Wu

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

18 Scopus citations

Abstract

An ELISA for urine microalbumin using microtiter plates has been developed. The assay uses polyclonal anti-human albumin antibody for coating the microtiter plates and the same antibody conjugated with horseradish peroxidase for detection. The assay sensitivity is 1.6 μg/ml. Results by this in-house ELISA show good correlation (r = 0.99) with those obtained by a commercial assay using the Behring BNII autoanalyzer. Within-day and between-day CVs are 10%. Reference values for microalbumin in 769 urine specimens from healthy Chinese subjects were higher in women than men and higher in subjects 50 yr than in those <50 yr of age. Elevated mean concentrations of urine microalbumin were observed in patients with type 2 diabetes and CVD. This in-house ELISA is simple, sensitive, precise, and especially suited for laboratories without expensive autoanalyzers.

Original languageEnglish
Pages (from-to)149-154
Number of pages6
JournalAnnals of Clinical and Laboratory Science
Volume35
Issue number2
StatePublished - 03 2005
Externally publishedYes

Keywords

  • Cardiovascular disease
  • Enzyme-linked immunosorbent assay
  • Microtiter plate assay
  • Type 2 diabetes
  • Urine microalbumin

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