JAK 2 Mutation Analysis (Exon 14) Test: Booking, Price, and Results
About JAK 2 Mutation Analysis (Exon 14) Test: Booking, Price, and Results
| Field | Value |
|---|---|
| Also Known As | JAK2 V617F Mutation Analysis, JAK2 Exon 14 Mutation Test, Janus Kinase 2 Mutation Test |
| Sample Type | Bone marrow (EDTA tube), Whole blood |
| Fasting Required | No fasting required |
| Report Time | 2 days |
| Recommended For | Adults of both genders with suspected myeloproliferative neoplasms |
| Price | Starting at ₹6,500 |
What Is a JAK 2 Mutation Analysis (Exon 14) Test?
The JAK 2 Mutation Analysis test is a specialised molecular test that checks for a specific genetic change in the JAK2 gene, known as the V617F mutation. This mutation causes blood cells to grow and divide without the usual controls, which can lead to certain blood disorders. Doctors prescribe this test when a patient shows signs of a myeloproliferative neoplasm (a type of blood cancer). The sample used is bone marrow and whole blood collected in EDTA tubes.
What Does a JAK 2 Mutation Analysis (Exon 14) Test Measure?
This test analyses the JAK2 gene for a specific point mutation at position 617. It uses real-time PCR (Taqman probe) technology to detect the genetic change with high precision.
The key parameters examined are listed below.
| Parameter | What It Checks |
|---|---|
| JAK2 V617F Mutation | Whether the mutation is present or absent in the sample |
| Mutant Allele Burden | The proportion of cells carrying the mutation, expressed as a percentage |
The JAK2 V617F mutation replaces the amino acid valine with phenylalanine at a specific location in the gene. This makes the JAK2 protein permanently active, leading to uncontrolled production of blood cells.
Why Is a JAK 2 Mutation Analysis (Exon 14) Test Done?
Doctors order this test when blood count results or clinical symptoms suggest a possible myeloproliferative disorder. It helps confirm or rule out specific blood conditions and guides treatment decisions.
Common Symptoms That May Require This Test
The following symptoms commonly prompt a doctor to request this test:
- Persistent fatigue or weakness
- Dizziness and frequent headaches
- Blurred vision
- Unexplained blood clots or thrombosis
- An enlarged spleen (splenomegaly)
- Unexplained weight loss
- Unusual bleeding or bruising
Conditions This Test Can Help Detect
This test can assist in identifying the following blood disorders:
- Polycythaemia vera (the JAK2 V617F mutation is found in 95% to 98% of patients)
- Essential thrombocythaemia (found in 50% to 60% of patients)
- Primary myelofibrosis (found in 50% to 60% of patients)
- Chronic myelomonocytic leukaemia (less frequently)
- Myelodysplastic syndrome (less frequently)
JAK 2 Mutation Analysis (Exon 14) Test for Chronic Disease Monitoring
Once a myeloproliferative neoplasm is diagnosed, this test can be repeated over time to track how well treatment is working. It helps doctors measure the level of residual disease and decide whether a patient may benefit from JAK2 inhibitor therapy. Monitoring the mutant allele burden at regular intervals gives a clearer picture of disease progression or response to treatment.
How to Prepare and What to Expect
Preparation for this test is straightforward. The following guidance covers what to do before your appointment.
Do You Need to Fast?
No fasting is required before this test. You may eat and drink as usual on the day of your appointment.
Practical Tips Before Your Test
The steps below will help your appointment go smoothly:
- Bring a detailed clinical history, including your symptoms, previous test results, and any relevant medical records, as this is required for the test.
- Inform your doctor or the collection team about all current medications and ongoing treatments.
- Stay well hydrated before your appointment, as this helps with the collection process.
- Avoid alcohol and strenuous physical activity for 24 hours before the test.
- Wear comfortable clothing with easy access to your arm.
Step-by-Step Procedure
Bone Marrow Sample Collection Procedure:
- Preparation and Numbing: The patient is positioned comfortably, usually lying on their side or stomach. The skin over the collection site (commonly the back of the hip bone) is cleaned, and a local anaesthetic is given to numb the area.
- Bone Marrow Aspiration: A specialised needle is inserted into the bone, and a small amount of liquid bone marrow is withdrawn using a syringe. The patient may feel brief pressure or a pulling sensation during this step.
- Completion and Aftercare: The needle is removed, and pressure is applied to the site to reduce bleeding. A dressing is placed over the area, and the sample is sent to the laboratory for analysis.
Note: The procedure is typically completed within 15–30 minutes and is performed by a trained healthcare professional in a hospital or clinic setting.
Whole Blood Sample Collection:
The whole blood sample collection follows these steps:
- Your skin over the collection site is cleaned thoroughly with an antiseptic solution.
- A local anaesthetic is applied to reduce discomfort during the procedure.
- A trained professional collects the whole blood sample using a specialised needle, placing it into a lavender-top EDTA tube (approximately 3 ml).
- The tube is handled carefully and labelled with your details.
- Gentle pressure is applied to the site after collection to minimise bleeding.
- The sample is stored at 2 to 8°C and dispatched promptly to the molecular laboratory, where real-time PCR analysis is carried out.
Factors That Can Affect Accuracy
Certain factors may influence the reliability of your results:
- A recent blood transfusion or bone marrow transplant can dilute the mutant cells, potentially leading to a false negative result.
- A very low number of mutated cells (below the detection threshold of the assay) may not be picked up.
- Presence of PCR inhibitors in the sample can interfere with the test.
- Delays in dispatching the sample or improper storage conditions may affect quality.
- Disease progression or an active treatment response can change mutation levels over time.
Understanding Your JAK 2 Mutation Analysis (Exon 14) Test Results
Your results will be reviewed by a haematologist or oncologist alongside your blood counts, clinical symptoms, and medical history. The table below outlines how typical results are interpreted.
| Parameter | Normal (Negative) | Positive Finding |
|---|---|---|
| JAK2 V617F Mutation | Not detected | Mutation detected |
| Mutant Allele Burden | Less than 0.1% | Above 0.1% (varies by assay) |
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 positive result, combined with other clinical findings, suggests a likely myeloproliferative neoplasm. A negative result does not completely rule out such a disorder, as other mutations (such as CALR or MPL) can also cause these conditions.
Results During Special Conditions
- Prior blood transfusions or bone marrow transplants can suppress or dilute the mutant cell population, which may result in a falsely low or negative reading.
- Disease progression or an active response to treatment can also shift mutation levels, so results should always be assessed in the full clinical context.
How to Maintain Healthy Levels
The tips below are general wellness suggestions, not treatment recommendations:
- Attend all follow-up appointments as advised, particularly if you have been diagnosed with a myeloproliferative disorder.
- Maintain a balanced diet and engage in moderate physical activity suitable to your condition.
- Keep well hydrated, especially if your doctor has noted elevated red blood cell counts.
Lupin Diagnostics JAK 2 Mutation Analysis (Exon 14) Test Price and Home Collection
The JAK 2 Mutation Analysis test is available at Lupin Diagnostics starting at ₹6,500, with home sample collection for the blood sample offered across multiple cities.
| City | Approximate Price (₹) |
|---|---|
| BHOPAL | 6500 |
| CHENNAI | 6500 |
| HYDERABAD | 6500 |
| KOLKATA | 6500 |
| NAVI MUMBAI | 6500 |
| PUNE | 6500 |
Disclaimer: Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
How to Book
- Select the JAK 2 Mutation Analysis (Exon 14) 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
Home collection (blood sample) for the JAK 2 Mutation Analysis test is available across cities, carried out by trained phlebotomists following safe handling protocols. The bone marrow sample is performed in a hospital or clinic setting. All samples are processed in NABL-accredited laboratories to ensure accuracy. Your digital report is made accessible via email or WhatsApp once ready.
Frequently Asked Questions
The JAK2 V617F mutation is a genetic change in the JAK2 gene where one amino acid (valine) is replaced by another (phenylalanine) at position 617. This change causes the JAK2 protein to remain permanently switched on, leading to uncontrolled blood cell production. It is a key marker for several myeloproliferative blood disorders.
No fasting is needed before this test. You may eat and drink normally on the day of your sample collection.
At Lupin Diagnostics, the report is typically delivered within 2 days. The test involves specialised real-time PCR analysis, which requires careful processing in a molecular laboratory.
A negative result makes a myeloproliferative neoplasm less likely, but it does not rule it out entirely. Other mutations, such as those in the CALR or MPL genes, can also cause these blood conditions. Your doctor may order additional tests if clinical suspicion remains.
This mutation is generally acquired during a person's lifetime, not inherited. It develops in certain blood cells only, rather than being present in every cell in the body from birth.
A haematologist or oncologist is the appropriate specialist to consult for an abnormal JAK 2 mutation analysis test result. These doctors specialise in blood disorders and cancers and can guide you on the next steps, which may include further testing such as a bone marrow biopsy.
Clinical history helps the laboratory and reporting doctor interpret your results accurately. Information about your symptoms, previous blood counts, prior treatments, and family history all provide important context for this specialised molecular test. Bring your records to your appointment.
JAK 2 Mutation Analysis (Exon 14) Test: Booking, Price, and Results
