Liquid Bx. Cell-Free HER2 Neu Test
About Liquid Bx. Cell-Free HER2 Neu Test
| Field | Value |
|---|---|
| Also Known As | Cell-Free HER2/neu Test, cfDNA HER2 Test, Liquid Biopsy ERBB2 Test, Circulating Tumour DNA HER2 Amplification Test |
| Sample Type | Peripheral blood |
| Fasting Required | No fasting required |
| Report Time | 15 days |
| Recommended For | Adults with suspected or diagnosed HER2-associated cancers (breast, gastric, and gastro-oesophageal junction cancers); males and females |
| Price | Starting at ₹16,800 |
What Is a Liquid Bx. Cell-Free HER2 Neu Test?
The Liquid Bx. Cell-Free HER2 Neu test is a blood-based cancer diagnostic test that analyses fragments of tumour DNA circulating in the bloodstream. It checks for amplification of the HER2 gene, which plays a role in cell growth and can drive certain cancers when overactive. The test is also known as the Cell-Free HER2/neu Test or cfDNA HER2 Test. A peripheral blood sample is used, making it a less invasive option compared to a traditional tissue biopsy.
What Does a Liquid Bx. Cell-Free HER2 Neu Test Measure?
This test looks at specific components found in circulating blood to assess HER2 gene activity. The key elements examined are listed below.
| Parameter | What It Assesses |
|---|---|
| HER2/ERBB2 gene amplification | Whether extra copies of the HER2 gene are present in tumour DNA fragments shed into the blood |
| Cell-free DNA (cfDNA) | DNA circulating freely in blood plasma, released from all types of cells, including tumour cells |
| Circulating tumour DNA (ctDNA) | DNA fragments released specifically from tumour cells into the bloodstream |
| HER2 copy number ratio | The relative number of HER2 gene copies compared to a reference, indicating the degree of amplification |
Why Is a Liquid Bx. Cell-Free HER2 Neu Test Done?
This test is ordered in a range of clinical situations, from initial investigation to ongoing cancer monitoring.
Common Symptoms That May Require This Test
A doctor may order this test when a patient presents with one or more of the following symptoms.
- Unexplained weight loss without a clear cause
- Persistent fatigue that does not improve with rest
- A lump in the breast or noticeable breast changes
- Abdominal discomfort or pain
- Difficulty swallowing or feeling full very quickly after eating
- Monitoring during active cancer treatment
Conditions This Test Can Help Detect
The test is relevant for identifying HER2 amplification across several cancer types. These include the following:
- Breast cancer (HER2 is amplified in approximately 20 to 25% of cases)
- Gastric (stomach) cancer, where HER2 overexpression occurs in 7 to 34% of patients
- Gastro-oesophageal junction adenocarcinoma
- Lung adenocarcinoma and ovarian cancer
- Colorectal cancer with ERBB2 amplification
- Aggressive forms of uterine cancer and salivary duct carcinomas
Liquid Bx. Cell Free HER2 Neu Test for Chronic Disease Monitoring
This test has an established role in tracking cancer over time. Measuring ctDNA levels repeatedly allows oncologists to assess whether treatment is working, as a reduction in HER2 copy number variation generally reflects a positive response to therapy. If levels rise again after a stable phase, this may signal disease progression or the development of resistance to anti-HER2 treatment. Monitoring frequency is determined by the treating oncologist based on individual clinical need.
How to Prepare and What to Expect
No special preparation is needed for this test, but a few practical steps will help ensure a smooth experience.
Do You Need to Fast?
No fasting is required for this test. You may eat and drink as normal before your appointment.
Practical Tips Before Your Test
The following steps will help ensure your sample is collected correctly and results are as accurate as possible:
- Bring a detailed clinical history including your symptoms, previous test results, and family history, as this is required for the test
- Inform your doctor about all current medications, including any ongoing cancer treatments, as these can affect ctDNA levels in the blood
- Stay well hydrated before your blood draw
- Wear clothing with loose or short sleeves to allow easy access to the arm vein
- Discuss the timing of your sample with your doctor, as recent surgery, chemotherapy, or radiation may temporarily alter cfDNA levels
Step-by-Step Procedure
The sample collection process for the Liquid Bx. Cell-Free HER2 Neu test procedure involves the following steps:
- A trained phlebotomist cleans a small area of skin on your arm with an antiseptic solution.
- A fine needle is used to draw 10 ml of blood from a vein, which is collected into a specialist Streck tube to preserve the cfDNA.
- The collection takes only a few minutes. You may feel a brief pinch, which passes quickly.
- The sealed tube is stored at refrigeration temperature (2 to 8°C) and dispatched to the laboratory promptly.
- In the laboratory, plasma is separated from the blood, and cell-free DNA is extracted.
- The extracted DNA is analysed using Droplet Digital PCR (ddPCR), a highly sensitive molecular method that detects and quantifies HER2 gene amplification.
Factors That Can Affect Accuracy
Several factors may influence the levels of cfDNA detected in the sample. Being aware of them helps your doctor interpret results correctly:
- Low tumour burden, which may mean insufficient ctDNA is shed into the blood
- Recent surgery, chemotherapy, or radiation therapy, which can temporarily change cfDNA concentrations
- Inflammatory conditions such as rheumatoid arthritis or lupus, which can elevate cfDNA from non-tumour sources
- Tumour characteristics including size, vascularisation, and growth rate
- A phenomenon called clonal haematopoiesis of indeterminate potential (CHIP), more common with age, which can complicate result interpretation
Understanding Your Liquid Bx. Cell Free HER2 Neu Test Results
Results from this test are reported qualitatively and should always be reviewed alongside your full clinical picture. The reference ranges below provide a general guide.
| Parameter | Normal / Negative | Positive / Amplified |
|---|---|---|
| HER2/ERBB2 amplification | Not detected | Detected |
| HER2 copy number ratio | Less than 2.0 (typically) | 2.0 or above |
Disclaimer: These ranges are general guidelines. Your doctor will interpret your results based on your age, health history, and other factors. Always consult a qualified healthcare professional for personalised medical advice.
A negative result means no HER2 amplification was detected in the circulating tumour DNA. A positive result indicates HER2 gene amplification, which may be relevant to treatment planning.
Results During Special Conditions
Certain situations can affect how results are interpreted:
- Clonal haematopoiesis of indeterminate potential (CHIP), a condition associated with ageing, can introduce genetic changes in blood cells that may complicate cfDNA analysis.
- Inflammatory conditions such as lupus or rheumatoid arthritis can also raise cfDNA levels unrelated to tumour activity.
- Because HER2 status can vary across different regions of the same tumour, a liquid biopsy helps capture a broader picture than a single tissue sample alone.
How to Maintain Healthy Levels
The following general wellness steps support overall health during and after cancer care:
- Attend all follow-up appointments with your oncologist to ensure timely result review and any necessary repeat testing
- Maintain balanced nutrition and engage in appropriate physical activity as tolerated and guided by your healthcare team
- Report any new or changing symptoms to your doctor promptly so they can be assessed in context
Lupin Diagnostics Liquid Bx. Cell-Free HER2 Neu Test Price and Home Collection
The Liquid Bx. Cell-Free HER2 Neu test is available at Lupin Diagnostics starting at a cost of ₹16,800, with home sample collection offered across cities.
| City | Approximate Price (₹) |
|---|---|
| BHOPAL | 16800 |
| CHENNAI | 16800 |
| HYDERABAD | 16800 |
| KOLKATA | 16800 |
| NAVI MUMBAI | 16800 |
| PUNE | 16800 |
Disclaimer: Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
How to Book
The following steps explain how to book your Liquid Bx. Cell-Free HER2 Neu test online:
- Select the test on the Lupin Diagnostics website.
- Choose your city and preferred time slot.
- Opt for home sample collection by a certified phlebotomist, or visit your nearest Lupin Diagnostics centre.
- Receive your report via email or WhatsApp within the stipulated turnaround time.
Home Collection
Lupin Diagnostics offers Liquid Bx. Cell-Free HER2 Neu test home collection across multiple cities in India. A certified phlebotomist visits your home at your chosen time to collect the peripheral blood sample. All samples are processed in NABL-accredited laboratories, and digital reports are made accessible via email or WhatsApp once ready.
Frequently Asked Questions
A tissue biopsy removes a small piece of the tumour directly and examines the cells under a microscope or through molecular tests. The Liquid Bx. Cell-Free HER2 Neu test analyses tumour DNA fragments circulating in the blood, requiring only a blood sample. Because it draws from DNA shed across the tumour, it can capture genetic variation that a single tissue sample may miss.
This test is recommended for patients with suspected or confirmed breast, gastric, or other solid tumours where HER2 status guides treatment decisions. It is also useful when a tissue biopsy is not possible or when a doctor needs to monitor how well an ongoing cancer treatment is working.
Studies have shown strong agreement between cfDNA-based HER2 results and tissue-based testing. However, sensitivity can be lower in early-stage cancers where fewer tumour cells are shedding DNA into the bloodstream. Your oncologist will consider this when interpreting your result.
No. A liquid biopsy cannot confirm a new cancer diagnosis on its own. It is most valuable as a complementary test, particularly when tissue is unavailable, when monitoring treatment response, or when checking for resistance to therapy.
The repeat interval depends entirely on your clinical situation and your oncologist's plan. The test can be used to monitor treatment response, detect early signs of disease progression, and assess minimal residual disease without invasive procedures.
A positive result means HER2 gene amplification was detected in the circulating cell-free DNA. This may indicate that the cancer is HER2-positive, which could make certain targeted therapies relevant to your treatment plan. Your oncologist will discuss what the result means for your specific situation.
Yes. The test requires only a routine blood draw and carries the same low risks as any standard venepuncture. These include minor bruising or brief discomfort at the site. No surgical procedure or tissue removal is involved, making it a well-tolerated option for most patients.
Liquid Bx. Cell-Free HER2 Neu Test
