World Lung Cancer Day: What is liquid biopsy, how does it make cancer treatment easier
- bySherya
- 01 Aug, 2025

Liquid biopsy is a new technique that makes it easier to identify and monitor lung cancer without surgery. In India, this technique is proving to be a revolutionary step for treatment.

Lung cancer is one of the most deadly diseases in India, but now patients are hopeful of getting relief from repeated painful surgeries and complex procedures. The reason for this is a new liquid bio biopsy technique. This is a non-invasive testing method in which cancer is identified by taking only blood samples. In such a situation, on the occasion of World Lung Cancer Day, today we will tell you how this technique is revolutionizing cancer treatment.
Late detection of lung cancer is the biggest challenge.
According to the 2025 report of the National Institute of Health, 5.9 percent of the total cancer cases in India are lung cancer. While the death toll due to this is 8.1 percent. According to doctors, early symptoms like persistent cough, fatigue or chest pressure are usually ignored. By the time you reach the hospital, the cancer has spread in the body, making treatment difficult.
Traditional biopsy is not possible every time.
Till now tissue biopsy has been used to identify tissue cancer. In which tissue is removed from the tumor and examined. But sometimes the tumor is in such parts of the lungs where it is difficult to reach, and this procedure can be risky for the elderly, heart or diabetes patients. Apart from this, a biopsy taken once does not always give complete information about the tumor.
Liquid biopsy is an option for examination without surgery.
Liquid biopsy is a modern and less complicated technique. In which the patient's blood is tested to find out whether cancer-related genetic disorders or tumor DNA are present in it or not. This not only provides relief to the patients but also helps the doctor to understand the genetic profile of cancer. The special thing is that this technique can identify such gene mutations which are common in Indian patients. With this, doctors can start targeted therapy which can prove to be more effective than traditional chemotherapy.
Monitoring can also be done during treatment
Another feature of liquid biopsy is that it can be repeated several times during treatment. With this, the doctor can know how the patient's disease is reacting and whether the tumor is becoming resistant to medicines. If this happens, the doctor can immediately change the direction of treatment.
As technology improves and expands rapidly in India,
liquid biopsy is now being used routinely in many cancer institutes in India. Scientists are working on increasing its sensitivity, reducing its cost and improving its accuracy in different cancers. As the trend of personalized medicine grows, this technique will become part of the mainstream of treatment.