Abstract: The invention pertains to a safe, quick and reliable method of detecting the presence of a target DNA sequence in a sample. The invention also pertains to a system for detecting presence of a target DNA sequence in a biological sample. The system includes an ITC template that includes a probe binding sequence that binds to a corresponding ITC probe and a first and second flanking primer recognizing sequence that binds to a first and second primer, respectively. The system also includes an ITC probe that binds to the ITC template probe binding sequence. The ITC probe includes a first marker molecule. The system also includes a first primer that binds to the first flanking primer sequence and a second primer that binds to said second primer sequence. The system further includes a target DNA sequence probe, wherein the target DNA sequence probe comprises a second marker molecule.