xTAG® Technology

A flexible solution for performing multiplexed nucleic acid assays

xTAG® Nucleic Acid Assay Technology


xTAG® Technology uses a proprietary universal tag system that allows easy development and optimization of nucleic acid assays. xTAG Technology combined with Luminex instruments is a complete solution for mid-density arrays evaluating gene expression, genotypes, or miRNA. Several nucleic acid tests from Luminex are based on xTAG Technology.

xTAG Technology


The TAG portion of the name represents TAG technology. TAG technology constitutes the proprietary sequences designed by Luminex for nucleic acid applications.


The advantages of using xTAG Technology in your nucleic acid assay are:

  • Sequences have been optimized to minimize cross-hybridization, thus preventing cross-talk in multiplexed nucleic acid assays.
  • Only three bases are used (TAG), preventing hybridization with native sequences.
  • Isothermal hybridization prevents long experimental design and testing times seen when you have to choose your own sequence.

IVD Assays Based on xTAG Technology


Make Your Own xMAP Assays


Click here to learn how to develop your own nucleic acid assays.