Sickling Solubility Test (Sickling Test) Test: Booking, Price, and Results
About Sickling Solubility Test (Sickling Test) Test: Booking, Price, and Results
| Field | Value |
|---|---|
| Also Known As | Sickle Cell Solubility Test, Sickle Prep, Sickledex, Haemoglobin S Solubility Test, Dithionite Solubility Test, Hb S Screen |
| Sample Type | Venous whole blood (EDTA tube) |
| Fasting Required | No fasting required |
| Report Time | Same day to 48 hours |
| Recommended For | All genders and ages (not suitable for infants under 6 months) |
| Price | Starting at ₹350 |
What Is a Sickling Solubility Test?
The sickling solubility test is a blood screening test that detects the presence of haemoglobin S (HbS), an abnormal form of haemoglobin linked to sickle cell conditions. A small blood sample is collected from a vein in the arm and analysed in a laboratory. Doctors commonly order this test when they suspect sickle cell disease or sickle cell trait, or as part of pre-operative screening. It is also known as the sickle solubility test, Sickledex, or the sickling test.
What Does a Sickling Solubility Test Measure?
The sickling solubility test checks whether haemoglobin S is present in the blood. When a blood sample is mixed with a special chemical solution, HbS forms a cloudy (turbid) mixture, while normal haemoglobin keeps the solution clear. The result is reported as either positive or negative.
The table below shows the single parameter assessed by this test.
| Parameter | Possible Result | What It Means |
|---|---|---|
| Sickle Solubility (HbS) | Negative | No significant HbS detected in the blood sample |
| Sickle Solubility (HbS) | Positive | HbS is present; further testing is needed |
Why Is a Sickling Solubility Test Done?
The sickling test is ordered for several reasons, ranging from investigating symptoms to pre-surgical assessment.
Common Symptoms That May Require This Test
A doctor may recommend this test if you experience any of the following symptoms.
- Unexplained fatigue or persistent tiredness
- Recurrent pain in the joints, hands, feet, or abdomen
- Shortness of breath without a clear cause
- Unusual paleness of the skin
- Jaundice (yellowing of the skin or whites of the eyes)
- Swelling in the hands or feet
- Frequent infections
Conditions This Test Can Help Detect
The sickling solubility test can help identify the following conditions.
- Sickle cell disease (a genetic blood disorder affecting red blood cell shape)
- Sickle cell trait (a carrier state where one copy of the HbS gene is inherited)
- The need for further confirmatory testing, such as haemoglobin electrophoresis
- Pre-operative risk in patients from regions where sickle cell mutations are more common, including parts of India, Africa, the Middle East, and the Mediterranean
How to Prepare and What to Expect
Preparing for this test is straightforward, and the collection process is quick and simple.
Do You Need to Fast?
No fasting is required before this test. You can eat and drink as normal on the day of your sample collection. If your doctor has ordered other tests alongside this one, check whether any of those require fasting.
Practical Tips Before Your Test
Keep the following points in mind before your appointment.
- Inform your doctor or the collection team about any recent blood transfusions (within the past four months), as these can affect results
- Let the healthcare provider know about any medications or supplements you are currently taking
- Wear clothing with easy access to the arm for a comfortable blood draw
- Stay well hydrated before your visit
Step-by-Step Procedure
Here is what to expect during sample collection.
- A trained phlebotomist (blood collection specialist) will ask you a few brief questions about your health history and recent transfusions.
- A small amount of blood is collected from a vein in your arm, or occasionally from a finger prick.
- The blood is placed into a special collection tube (EDTA tube) that prevents clotting.
- In the laboratory, the sample is mixed with a chemical solution containing sodium dithionite.
- If HbS is present, the solution turns cloudy; a clear solution indicates a negative result.
- The sample is dispatched for reporting, and your result is typically available the same day or within 48 hours.
Factors That Can Affect Accuracy
Certain conditions may influence the reliability of this test. These include the following.
- Severe anaemia (very low red blood cell count)
- A recent blood transfusion within the past four months
- High levels of foetal haemoglobin (common in infants under six months)
- Elevated protein levels in the blood (hyperglobulinaemia)
- Abnormally high white blood cell or red blood cell counts
- High blood fat levels (hyperlipidaemia)
Understanding Your Sickling Solubility Test Results
Results from this test are qualitative, meaning they are reported as either negative or positive rather than as a numerical value. Your doctor will review the result alongside your symptoms, family history, and overall health.
| Result | Interpretation |
|---|---|
| Negative | No significant haemoglobin S detected; sickle cell disease or trait is unlikely |
| Positive | HbS is present; further confirmatory testing is required |
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
Some conditions can produce misleading results with this test.
- A false positive (a positive result when HbS is actually absent) can occur in patients with very high red blood cell counts, elevated blood proteins, extremely high white blood cell counts, or high blood fat levels.
- A false negative (a negative result when HbS is actually present) may occur in patients with severe anaemia, haemoglobin S levels below 10%, or high levels of foetal haemoglobin. This is why this test is not recommended for infants under six months. A recent blood transfusion can also produce either type of misleading result.
How to Maintain Healthy Levels
The following general wellness habits are worth considering regardless of your test outcome.
- Stay well hydrated, particularly if you live in a warm climate or are physically active
- Discuss your result with a haematologist (blood specialist) if your test returns positive
- If you are identified as a carrier of the sickle cell trait, consider speaking with a genetic counsellor before planning a family
Lupin Diagnostics Sickling Solubility Test Price and Home Collection
The sickling solubility test is available at Lupin Diagnostics with home sample collection across multiple cities in India. Prices vary by location, as shown in the table below.
| City | Approximate Price (₹) |
|---|---|
| Mumbai | ₹350 |
| Bangalore | ₹350 |
| Chennai | ₹350 |
| Hyderabad | ₹350 |
| Borivalli | ₹350 |
| Nagpur | ₹350 |
| Lucknow | ₹350 |
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 sickling solubility test across cities in India, so you can have your sample collected from the comfort of your home. All samples are processed in NABL-accredited laboratories staffed by qualified pathologists and trained technologists. Your digital report will be accessible via email or WhatsApp once it's ready.
Frequently Asked Questions
The sickling solubility test is a screening test that checks for the presence of haemoglobin S (HbS) in the blood. It helps identify people who may have sickle cell disease or carry the sickle cell trait and is also used as a quick preoperative screening check for patients from high-risk populations.
No. The sickling test is qualitative and cannot distinguish between sickle cell disease and sickle cell trait. If your result is positive, your doctor will arrange a confirmatory test, such as haemoglobin electrophoresis or HPLC (high-performance liquid chromatography), to determine the exact diagnosis.
No fasting is required. You can eat and drink normally before your appointment. No special preparation is needed beyond informing your doctor about any recent blood transfusions or medications.
Infants under 6 months have high levels of foetal haemoglobin (HbF) in their blood. This can mask the presence of HbS and lead to a false negative result. For this age group, doctors use alternative tests that are not affected by foetal haemoglobin.
A positive result on the sickling solubility test simply indicates HbS may be present. It does not confirm the type or severity of the condition. You should see your doctor promptly, who will arrange further confirmatory testing and guide you on the next steps.
Yes. Blood transfusions within the past four months can significantly affect the accuracy of this test. You should inform your doctor and the collection team about any recent transfusions, as testing may need to be postponed until the appropriate time has passed.
When performed correctly on an adult patient without any confounding factors, this test has been reported to have very high sensitivity and specificity for detecting HbS. However, accuracy can be reduced by conditions such as severe anaemia, high foetal haemoglobin levels, or recent blood transfusions. Your doctor will consider these factors when interpreting your result.
Sickling Solubility Test (Sickling Test) Test: Booking, Price, and Results
