Power of Rare Cells

Detecting rare cells enables research innovation and helps expedite the drug discovery and development process.

Frequency of CTCs1


  1. Allard WJ, Matera J, Miller MC, et al. Tumor cells circulate in the peripheral blood of all major carcinomas but not healthy subjects or patients with nonmalignant diseases. Clin Cancer Res 2004;10:6897-6904.

The FDA-cleared CELLSEARCH® Circulating Tumor Cell Test defines the CTC phenotype as outlined below. The RUO tests have a broader definition.

Benefits of Characterizing Rare Cells in a Clinical Trial