IHC Marker - Galectin Test: Booking, Price, and Results
About IHC Marker - Galectin Test: Booking, Price, and Results
| Field | Value |
|---|---|
| Also Known As | Gal-3 IHC, Galectin-3 Immunostain, IHC Galectin 3 |
| Sample Type | Formalin-fixed, paraffin-embedded (FFPE) tissue block |
| Fasting Required | No. This test is performed on a tissue specimen collected through biopsy or surgery |
| Report Time | 3 Days |
| Recommended For | All genders; individuals with thyroid nodules or suspected thyroid malignancy |
| Price | Starting at ₹1,920 |
What is an IHC Marker - Galectin Test?
The IHC marker - Galectin 3 test is a specialised immunohistochemistry (IHC) test that detects the presence and pattern of Galectin-3 protein in thyroid tissue. IHC is a laboratory technique that uses antibodies to identify specific proteins within tissue samples. Doctors order this test to help determine whether a thyroid nodule or growth is benign (non-cancerous) or malignant (cancerous). It is also known as the Gal-3 IHC test or the Galectin-3 Immunostain.
What Does an IHC Marker - Galectin Test Measure?
The IHC marker - Galectin 3 test analyses tissue for the expression of Galectin-3, a protein from the beta-galactoside binding lectin family. This protein is involved in how cells stick together and how they grow or die. Here is what the test evaluates:
| Component | What It Tells Us |
|---|---|
| Galectin-3 protein expression | Whether the protein is present in the tissue cells |
| Staining intensity | How strongly the protein is expressed (weak, moderate, or strong) |
| Staining distribution | Whether staining is focal (in patches) or diffuse (widespread) |
Galectin-3 is normally found in immune cells such as macrophages and neutrophils. It is not expressed in normal or benign thyroid tissue. When strong, diffuse staining is detected in thyroid tissue, it may indicate a malignant growth.
Why is an IHC Marker - Galectin Test Done?
This test is requested when a thyroid abnormality has been found and a tissue sample is available for further analysis. The goal is to help distinguish benign from malignant thyroid lesions.
Common Symptoms That May Require This Test
A doctor may recommend this test when a patient presents with the following symptoms:
- A thyroid nodule detected during a physical examination
- Visible neck swelling
- Difficulty swallowing
- Hoarseness or a change in voice
- Suspicious findings on a thyroid ultrasound
- An indeterminate result on a fine needle aspiration biopsy (FNAB), where the initial cell sample is unclear
Conditions This Test Can Help Detect
The IHC marker - Galectin 3 test can assist in identifying the following conditions:
- Papillary thyroid carcinoma (the most common type of thyroid cancer)
- Follicular thyroid carcinoma
- Medullary thyroid carcinoma
- Anaplastic thyroid carcinoma
- Insular carcinoma
- Metastatic carcinoma involving the thyroid
By confirming or ruling out malignancy, this test can also help avoid unnecessary surgical removal of benign nodules.
How to Prepare and What to Expect
Because this test is performed on tissue already collected through a prior procedure, no special preparation is needed from the patient at the time of testing. However, there are important steps to follow when submitting the specimen.
Do You Need to Fast?
No fasting is required. This test is not a blood or urine test. It is carried out on a tissue specimen obtained during a biopsy or surgical procedure, so dietary restrictions do not apply.
Practical Tips Before Your Test
When submitting a tissue specimen for this test, keep the following in mind:
- Ensure the tissue block is a properly formalin-fixed, paraffin-embedded (FFPE) block for the best staining quality
- Tissue should be adequately fixed in 10% neutral buffered formalin
- Bring a detailed clinical history, including your symptoms, previous test results, and family history, as this is required for the test
- Inform the laboratory of any relevant prior diagnoses or differential diagnoses under consideration
- If submitting unstained slides instead of a block, ensure two to three positively charged unstained slides are cut at 4 to 5 microns
Step-by-Step Procedure
The IHC marker - Galectin 3 test procedure follows these steps once tissue has been collected:
- A tissue specimen is obtained through surgical resection or biopsy and immediately fixed in formalin to preserve cellular structure.
- The fixed tissue is processed and embedded in paraffin to create an FFPE block, which is then submitted to the laboratory.
- Thin tissue sections are cut from the block, placed on slides, and deparaffinised (paraffin is removed to allow staining).
- A process called antigen retrieval is typically performed using heat treatment in a citrate buffer to expose the Galectin-3 protein.
- A primary Galectin-3 antibody is applied to the slide and binds to the protein if it is present in the tissue.
- A secondary antibody and detection system are applied, and the slide is examined under a microscope by a pathologist, who reports the staining result.
Factors That Can Affect Accuracy
Several factors may influence the quality or interpretation of results:
- Poor tissue fixation or inadequate formalin exposure
- Improper antigen retrieval technique
- Endogenous biotin is naturally present in thyroid cells, which may cause false-positive staining
- Antibody specificity and laboratory technique
- Pathologist experience in interpreting IHC staining patterns
Understanding Your IHC Marker - Galectin Results
Results from the IHC marker - Galectin 3 test are reported based on whether Galectin-3 staining is detected in the tissue and, if so, how strong and widespread it is. A pathologist reviews the slide and correlates findings with the tissue's overall appearance.
| Result | Pattern | Interpretation |
|---|---|---|
| Negative | No staining detected | Suggests benign or normal thyroid tissue |
| Positive (diffuse, strong staining) | Widespread, intense staining | Suggests a malignant thyroid growth |
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.
Results During Special Conditions
Certain conditions may affect how results are interpreted:
Patients with Hashimoto's thyroiditis (an autoimmune thyroid condition) may show increased Galectin-3 expression in their thyroid cells, which could be mistaken for malignancy. Hürthle cell adenomas, a type of benign thyroid growth, have also shown positive Galectin-3 staining in a significant proportion of cases, so clinical context is essential. Additionally, the high level of endogenous biotin naturally present in thyroid cells can sometimes produce false-positive staining, making a pathologist's expertise particularly important.
How to Maintain Healthy Levels
Since this is a diagnostic tissue marker rather than a routine blood parameter, there is no target "level" to maintain. General thyroid health practices are still worthwhile:
- Attend regular thyroid check-ups if you have a family history of thyroid disease
- Report any new neck lumps, swelling, or changes in your voice to a doctor without delay
- Follow up on any indeterminate FNAB results as recommended by your specialist
Lupin Diagnostics IHC Marker - Galectin Price
The IHC marker - Galectin 3 test cost at Lupin Diagnostics starts at ₹1,920. This test requires a visit to a Lupin Diagnostics centre; home collection is not available as it is performed on a tissue specimen submitted by a clinician or surgical team.
| City | Approximate Price (₹) |
|---|---|
| BHOPAL | 1920 |
| CHENNAI | 1920 |
| HYDERABAD | 1920 |
| KOLKATA | 1920 |
| NAVI MUMBAI | 1920 |
| PUNE | 1920 |
Disclaimer: Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
How to Book
Follow these steps to book your IHC marker - Galectin 3 test online booking:
- Select the test on the Lupin Diagnostics website.
- Choose your city and preferred centre location.
- Visit the centre at your scheduled time to submit specimens.
- Receive your report via email or WhatsApp within the stipulated turnaround time.
Frequently Asked Questions
This test is used to help determine whether a thyroid nodule or growth is benign or malignant. Strong, diffuse Galectin-3 staining in thyroid tissue is associated with malignancy. It is particularly useful when routine biopsy findings are unclear.
The tissue sample is obtained through a fine needle aspiration biopsy, a core biopsy, or surgical removal of the thyroid nodule. The collected tissue is then fixed in formalin, embedded in a paraffin block, and submitted to the laboratory for the IHC marker - Galectin 3 test procedure.
Studies suggest a sensitivity of approximately 96.2% and a specificity of 92.6% for Galectin-3 in the identification of thyroid malignancy. However, accuracy can vary depending on the type of thyroid lesion, laboratory technique, and pathologist interpretation. The test is used alongside other clinical findings and markers, not in isolation.
Yes. Galectin-3 has been found to be positive in some cases of follicular adenoma, nodular goitre, and Hashimoto's thyroiditis. This is why a positive result alone is not conclusive. Your doctor will consider all clinical and histopathological information before reaching a diagnosis.
No preparation is needed from the patient for this test. It is performed on tissue that has already been collected. However, it is important to provide the laboratory with a complete clinical history, as it is required for accurate interpretation of results.
At Lupin Diagnostics, the report is delivered within 3 days. This includes time for tissue processing, IHC staining, and pathologist review.
Yes. Research has shown that Galectin-3 expression is relevant in other cancers as well, including non-small cell lung carcinoma, where it has been studied as a marker for predicting response to immunotherapy. Your doctor will advise on the specific clinical application in your case.
IHC Marker - Galectin Test: Booking, Price, and Results
