Sudan Black B Stain, Bone Marrow Test: Booking, Price, and Results
About Sudan Black B Stain, Bone Marrow Test: Booking, Price, and Results
| Field | Value |
|---|---|
| Also Known As | SBB Stain, Sudan Black B Cytochemistry, SBB Cytochemical Stain |
| Sample Type | Bone marrow aspirate or peripheral blood smear |
| Fasting Required | No fasting required |
| Report Time | 48 to 72 hours |
| Recommended For | All ages; males and females with suspected blood cancers |
| Price | Starting at ₹850 |
What Is a Sudan Black B Stain, Bone Marrow Test?
The Sudan Black B Stain Bone Marrow test is a specialised laboratory test used to identify and classify abnormal blood cells in bone marrow or blood samples. It uses a fat-soluble dye that binds to lipids inside certain white blood cells, making them visible under a microscope. Also known as the SBB Cytochemical Stain test, it is typically ordered by haematologists when blood cancer is suspected. The sample used is either a bone marrow aspirate or a peripheral blood smear.
What Does a Sudan Black B Stain, Bone Marrow Test Measure?
The Sudan Black B Cytochemistry test works by staining lipids found in the granules of specific white blood cells. The colour and intensity of staining help pathologists identify cell types and detect abnormalities.
The test examines the following:
| Component | What It Shows |
|---|---|
| Lipid content in white blood cells | Stains neutral fats, phospholipids, and sterols in cell granules |
| Myeloid cell identification | Highlights the granulocytic cell series, similar to myeloperoxidase staining |
| Cell differentiation | Distinguishes myeloblasts and neutrophils from lymphocytes based on staining pattern |
Why Is a Sudan Black B Stain, Bone Marrow Test Done?
Doctors order the SBB Stain test when they need to classify leukaemia or investigate unexplained blood abnormalities. The test helps identify whether abnormal cells are of myeloid or lymphoid origin, which is essential for choosing the right treatment approach.
Common Symptoms That May Require This Test
A doctor may request this test when a patient presents with any of the following symptoms:
- Persistent fatigue and breathlessness due to low red blood cell counts
- Looking unusually pale
- Recurring infections caused by a lack of healthy white blood cells
- Unexplained bruising or unusual bleeding, including bleeding gums and frequent nosebleeds
- Aching joints and bones
- General feeling of being unwell for an extended period
Conditions This Test Can Help Detect
The Sudan Black B Stain Bone Marrow test assists in identifying several blood-related conditions, including:
- Acute myeloid leukaemia (AML), a cancer of the blood and bone marrow
- Acute lymphoblastic leukaemia (ALL), which typically shows a negative result, helping distinguish it from AML
- Chronic myelomonocytic leukaemia (CMML)
- Myelocytic and myelomonocytic leukaemia
- Myeloproliferative disorders, where the bone marrow produces too many blood cells
Sudan Black B Stain, Bone Marrow Test for Chronic Disease Monitoring
This test may be repeated during leukaemia treatment to monitor how well therapy is working. Changes in the number and type of stained cells can indicate whether treatment is having the desired effect. Your doctor will use the results alongside other clinical findings to assess treatment response.
How to Prepare and What to Expect
No special preparation is needed for the SBB Stain test near me or at a collection centre. The process is straightforward, and the medical team will guide you at every step.
Do You Need to Fast?
No fasting is required before this test. You can eat and drink as normal beforehand.
Practical Tips Before Your Test
Here are a few simple things to keep in mind before your appointment:
- Inform your doctor about all medications you are currently taking.
- Wear comfortable, loose-fitting clothing that allows easy access to the arm or hip area.
- Bring a valid photo ID and your doctor's prescription.
- Arrange for a responsible adult to accompany you if a bone marrow sample is being collected.
Step-by-Step Procedure
The collection process follows these steps:
- The doctor identifies the collection site, usually the back of the hip bone (posterior iliac crest).
- A local anaesthetic is applied to numb the area completely before any needle is inserted.
- A thin needle is used to withdraw a small amount of liquid bone marrow from inside the bone.
- If a blood sample is needed instead, a standard blood draw is done from a vein in the arm.
- The collected sample is prepared on a glass slide, and the Sudan Black B dye is applied.
- The stained slide is reviewed under a microscope by an experienced pathologist, and the sample is dispatched to the laboratory for analysis.
Factors That Can Affect Accuracy
Certain factors may influence the quality of results. These include:
- Poorly preserved or old samples that were not fixed promptly after collection
- Improper storage of the staining reagents
- Medications that may alter cell composition
- The experience and skill of the personnel interpreting the stained slide
Understanding Your Sudan Black B Stain, Bone Marrow Test Results
Results from this test are not standalone figures. They must always be reviewed by a qualified haematologist or pathologist in the context of your full clinical picture. The table below summarises what different staining outcomes typically indicate:
| Cell Type | Expected Staining | Interpretation |
|---|---|---|
| Myeloid cells (neutrophils, myeloblasts) | Dark blue to black | Positive (normal for myeloid lineage) |
| Monocytes | Absent or faint staining | Variable |
| Lymphocytes, erythroid cells, platelets | No staining | Negative (normal) |
| AML diagnostic threshold | More than 3% blasts staining positive | Suggests myeloid lineage |
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.
Results During Special Conditions
In rare cases, results may not follow the expected pattern. A small number of ALL cases (reported at around 1.6% in published studies) have shown SBB-positive staining, even though ALL is typically SBB-negative. Because of this, results must always be interpreted alongside other laboratory markers and clinical findings. Poorly preserved samples may also reduce staining intensity and affect the final interpretation.
How to Maintain Healthy Levels
While this test is used for diagnosis rather than routine wellness monitoring, general healthy habits support overall blood and bone marrow health:
- Eat a balanced diet that includes plenty of fruits, vegetables, and whole grains.
- Avoid smoking and limit alcohol intake.
- Attend follow-up appointments as advised by your doctor, particularly if you are undergoing treatment.
Lupin Diagnostics Sudan Black B Stain, Bone Marrow Test Price and Home Collection
The Sudan Black B Stain Bone Marrow test price at Lupin Diagnostics starts at approximately ₹850, and home sample collection is available.
| City | Approximate Price (₹) |
|---|---|
| Mumbai | ₹850 |
| Chennai | ₹850 |
| Pune | ₹850 |
| Kolkata | ₹850 |
| Hyderabad | ₹850 |
Disclaimer: Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
How to Book
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 home collection for the SBB Stain test near me across cities in India. All samples are processed in NABL-accredited laboratories by trained technologists. Your digital report is delivered directly to your email or WhatsApp, so you can share it with your doctor without delay.
Frequently Asked Questions
The Sudan Black B Stain Bone Marrow test is primarily used to tell apart acute myeloid leukaemia (AML) from acute lymphoblastic leukaemia (ALL). It does this by staining lipids found in myeloid cell granules. This distinction is important because the two conditions are treated very differently.
A trained doctor inserts a thin needle into the back of the hip bone after applying a local anaesthetic to numb the area. A small amount of liquid bone marrow is then withdrawn. The procedure is relatively quick and is performed with your comfort and safety in mind.
Bone marrow aspiration may cause brief discomfort when the needle is inserted, but a local anaesthetic is used to minimise pain. Most patients describe a feeling of pressure rather than sharp pain. Any soreness afterwards usually settles within a day or two.
Yes, the SBB Cytochemical Stain test can be performed on patients of any age, including children, when a doctor considers it clinically necessary based on symptoms and medical history.
Both tests identify myeloid cells and show a similar staining pattern. However, SBB has a practical advantage: it can be used on smears that are more than two weeks old. SBB also stains both types of neutrophil granules, while MPO stains only one. Your doctor or pathologist will decide which test is most appropriate.
A positive result suggests that the abnormal cells are of myeloid origin. Your doctor will review the findings alongside your other test results and clinical history before discussing the next steps, which may include further diagnostic tests or a referral to a specialist.
Sudan Black B Stain, Bone Marrow Test: Booking, Price, and Results
