A real time tissue sampling and analysis system includes a catheter including an elongated body defining at least one internal lumen, a sampling device positionable within the at least one internal lumen of the catheter for collecting a tissue sample, and a biochip disposed within the at least one internal lumen. The biochip includes a substrate for receiving the tissue sample, a marker for interacting with the tissue sample, and a sensor for identifying a characteristic of the tissue sample and transmitting data about the tissue sample to a processing unit for analysis.