Redefining Reference Standards

HDx™ Reference Standards
Identify and Control Variability Every Day

Fluorescence In-Situ Hybridization

Identify and Control Variability within Fluorescence In-Situ Hybridization Assays

Fluorescence-based In-situ Hybridization (FISH) is used to visualize DNA or localized RNA in cells, tissues and tumors. Providing a reliable means for studying the genetic composition of cells in mitosis as well as interphase, with high detection sensitivity and capacity for multiplicity, FISH is also frequently used to demonstrate the presence of cancer gene rearrangements characteristic of certain hematologic malignancies.

View FISH HDx Reference Standards for Fluorescence In-Situ Hybridization  

Two main components are required in the preparation of a FISH assay: the DNA probe and the target DNA to which the probe will be hybridized. To date, a wide range of commercially available probes have been developed for a number of common targets, however their reliable use requires stringent validation and routine monitoring of assay performance.  Consistent and well-validated reference materials are therefore essential to ensure accuracy.

Operator Variability
Sample FFPE Pepsin Treatment  Probe Hybridisation Microscope Diagnosis

Variability within a standard FISH based workflow


Horizon Diagnostics has worked closely with the key European and US pathology proficiency schemes, FISH laboratories and biotech companies to develop  FISH HDx Reference Standard slides. The reference materials are provided in cell culture spread or formalin-fixed, paraffin embedded (FFPE) sections as appropriate for the tumor type being evaluated.  

Key Features

  • Defined chromosomal abnormalities
  • Custom FISH HDx Reference Standards available upon request
  • Genomic materials of FISH HDx Reference Standards available upon request
  • Available as FFPE sections, interphase nuclei, and custom metaphase spreads
  • Validated using FISH


  • FISH assay performance monitoring
  • DNA probe validation
  • SISH, CISH and other related techniques

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