Liquid Biopsy Lung Cancer Test
Short Name: Liquid Biopsy Lung
Also known as: Liquid Biopsy for Lung Cancer, ctDNA Lung Cancer Test, NGS-based Liquid Biopsy
Liquid Biopsy Lung Cancer Test test available at DNA Labs India for ₹33,000. Uses Next Generation Sequencing (NGS) on Blood samples. Results in Reports are available within 21 working days after sample receipt.. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr Pasupathy Arumugam
Consultant Pathologist · Reg: 21521
Last reviewed: September 7, 2026
Overview
The purpose of the Liquid Biopsy Lung Cancer Test is to detect genetic alterations in circulating tumor DNA (ctDNA) from a blood sample. It is used for early detection of lung cancer, identification of actionable mutations for targeted therapy, monitoring treatment response, and detecting minimal residual disease or recurrence. This non-invasive test is particularly valuable when tissue biopsy is not feasible or when repeated sampling is required.
- Test Code
- 6270
- CPT Code
- 81445
- ICD Code
- C34.9
- Price
- ₹33,000
- Sample Type
- Blood
- Result Time
- Reports are available within 21 working days after sample receipt.
- Fasting Required
- No
- Method
- Next Generation Sequencing (NGS)
Sample Collection
No special preparation required. Inform your doctor about any medications you are taking.
Method: Venipuncture
Laboratory Analysis
A trained phlebotomist will draw blood from a vein in your arm. The procedure is quick and causes minimal discomfort.
Report Delivery
You can resume normal activities immediately. No restrictions.
Timeline: Reports are available within 21 working days after sample receipt.
Patient Instructions
About This Test
Who Should Get This Test
The purpose of the Liquid Biopsy Lung Cancer Test is to detect genetic alterations in circulating tumor DNA (ctDNA) from a blood sample. It is used for early detection of lung cancer, identification of actionable mutations for targeted therapy, monitoring treatment response, and detecting minimal residual disease or recurrence. This non-invasive test is particularly valuable when tissue biopsy is not feasible or when repeated sampling is required.
How to Prepare
- Use Streck Cell-Free DNA BCT tube
- Fill tube to indicated mark
- Mix gently 8-10 times
- Do not refrigerate or freeze
- Transport to lab within 72 hours at ambient temperature
Doctor's Notes
Reviewed by Dr Pasupathy Arumugam — MBBS, MD (Pathology) · Reg. No. 21521
"Liquid biopsy is a breakthrough for lung cancer management, enabling early detection and real-time monitoring of treatment response without invasive tissue biopsies. At DNA Labs India, we ensure high sensitivity and specificity using advanced NGS technology."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Hemolyzed sample
- Clotted sample
- Incorrect tube used
- Sample older than 72 hours
- Insufficient volume
Understanding Your Results
EGFR mutation detected
May benefit from EGFR tyrosine kinase inhibitors (TKIs) such as erlotinib, gefitinib, osimertinib.
ALK rearrangement detected
May benefit from ALK inhibitors such as crizotinib, alectinib, lorlatinib.
ROS1 rearrangement detected
May benefit from ROS1 inhibitors such as crizotinib, entrectinib.
BRAF mutation detected
May benefit from BRAF inhibitors such as dabrafenib plus trametinib.
No mutation detected
No actionable mutation found; further testing or tissue biopsy may be needed.
Consult your oncologist if you have symptoms of lung cancer, or if you have been diagnosed with lung cancer and need treatment guidance. Also, consult if you have a family history of lung cancer or are a long-term smoker.
Limitations
- ⚠May not detect all types of genetic alterations
- ⚠Low ctDNA levels may lead to false negatives
- ⚠Not a substitute for tissue biopsy in all cases
- ⚠Results should be interpreted in conjunction with clinical findings
Risks & Considerations
- ●Minimal risk of bruising or bleeding at puncture site
- ●Rare risk of infection
- ●No serious risks associated with blood draw
Interfering Factors
- ●Hemolysis of blood sample
- ●Insufficient blood volume
- ●Sample not collected in Streck tube
- ●Delayed processing beyond 72 hours
- ●Recent chemotherapy or radiation may reduce ctDNA levels
Compare With Similar Tests
| Test | Liquid Biopsy Lung Cancer Test | Liquid Biopsy | Tissue Biopsy |
|---|---|---|---|
| Comparison | Liquid Biopsy Lung Cancer Test |
Frequently Asked Questions
What is a liquid biopsy for lung cancer?
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