Target Selector EGFR Mutation Test Kit*

for rare mutations in blood and tissue

EGFR Testing

* For research use only. Not for use in diagnostic procedures.

This kit detects EGFR mutations in DNA derived from blood plasma or FFPE tissue sections to give insight into cancer characteristics and provide Biomarker status of tumors such as non-small cell lung cancer.

Benefits of Biocept Target Selector Switch-Blocker Technology

  • Enrichment of cancer biomarker mutations (Del19, L858R, T790M) in a high wild-type background
  • Suppression of wild-type DNA amplification
  • Proofreading DNA Polymerase resulting in lower false positives
  • Avoids damaged DNA templates (such as deaminated cytosines)
  • Ultra-high sensitivity and specificity
  • Combination with Sanger sequencing for orthogonal verification of the enriched mutation
  • Detection of Del19, L858R, T790M as well as Wild-Type are quantitative


  • Stability: 1 year
  • Sensitivity: 0.05% mutant allele fraction -single copy detection of mutant in up to 14000 copies of wild-type DNA background
  • Specificity: >99%
  • Effective range: 10pg-50ng DNA

FFPE DNA Preparation and Performance

  • Eliminates need for macrodissection of FFPE tissue by enriching mutations and blocking wild-type DNA amplification
  • Sensitivity thresholds have been established to account for artifacts introduced by formaldehyde fixation
  • Mutant allele frequencies below these cut-offs are considered negative for the mutation:
    • Del19 cutoff: 0.17%
    • L858R cutoff: 0.17%
    • T790M cutoff: 2.87%

These thresholds are provided as a guideline but every laboratory should establish their own thresholds based on their own criteria:

  • Specificity: >98.4%
  • Effective range: 10pg-50ng DNA

How the Target Selector EGFR Mutation Test Kit Works


If you are developing your own assay, learn more about the benefits of our CEE-Sure™ Blood Collection Tube (BCT) for ctDNA and CTCs.

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Contact us to learn how Biocept can support your research and testing.

Target Selector Kits are for research use only. Not for use in diagnostic procedures.