Soluble Transferrin Receptor Test: Booking, Price, and Results
About Soluble Transferrin Receptor Test: Booking, Price, and Results
| Field | Value |
|---|---|
| Also Known As | sTfR, Serum Transferrin Receptor, Transferrin Receptor Soluble |
| Sample Type | Serum (venous blood) |
| Fasting Required | No fasting required |
| Report Time | 4 days |
| Recommended For | Adults and children of all genders; particularly useful when routine iron tests are inconclusive |
| Price | Starting at ₹2,380 |
What is a Soluble Transferrin Receptor Test?
The Soluble Transferrin Receptor test, also called the sTfR test, measures the level of soluble transferrin receptors in the blood. Transferrin receptors are proteins on cell surfaces that help transport iron into cells. A small blood sample drawn from a vein in the arm is used for this test. Doctors typically order it to assess iron deficiency, especially when standard tests like ferritin give unclear results due to inflammation or chronic illness.
What Does a Soluble Transferrin Receptor Test Measure?
This test measures a single key marker. The level of this marker reflects how much iron is available to cells and how actively the body is producing red blood cells.
| Parameter | What It Reflects |
|---|---|
| Soluble Transferrin Receptor (sTfR) | Cellular demand for iron and the rate of red blood cell production |
When iron supply to cells is low, the body increases the number of transferrin receptors, causing sTfR levels in blood to rise. This makes the Soluble Transferrin Receptor test a sensitive indicator of true iron deficiency at the cellular level.
Why is a Soluble Transferrin Receptor Test Done?
A doctor may order this test for several reasons, including evaluating unexplained anaemia or distinguishing between different types of anaemia.
Common Symptoms That May Require This Test
The following symptoms may prompt a doctor to request this test:
- Persistent or unexplained fatigue and weakness
- Pale or dull-looking skin
- Shortness of breath on mild exertion
- Dizziness or light-headedness
- Cold hands and feet
- Brittle or breaking nails
Conditions This Test Can Help Detect
This test can support the diagnosis or evaluation of several conditions, including:
- Iron deficiency anaemia (IDA), where inadequate iron impairs red blood cell production
- Anaemia of chronic disease (ACD), to distinguish it from iron deficiency anaemia
- Haemolytic anaemia and thalassaemia, where increased red blood cell turnover raises sTfR
- Polycythaemia, sickle cell anaemia, and megaloblastic anaemia
- Iron overload conditions, such as haemochromatosis, where sTfR levels may be low
Soluble Transferrin Receptor Test for Chronic Disease Monitoring
In patients with long-term conditions such as chronic kidney disease, rheumatoid arthritis, or inflammatory bowel disease, ferritin levels are often unreliable because inflammation artificially raises them. The sTfR test is not affected by inflammation in the same way, making it a more dependable tool for tracking how well iron therapy is working. Doctors may repeat this test every 3 to 6 months to monitor progress.
How to Prepare and What to Expect
Do You Need to Fast?
No fasting is required. You can eat and drink normally before this test. If your doctor has also ordered other tests at the same appointment, check whether those tests require fasting.
Practical Tips Before Your Test
Keep the following in mind before you go for sample collection:
- Bring a detailed clinical history, including your symptoms, previous test results, and any relevant medical records, as this is required for the test.
- Inform the phlebotomist or your doctor about all medications, supplements, and blood-thinning medicines you are taking.
- Stay well hydrated, as this makes it easier to draw blood from a vein.
- Wear a loose-fitting top or clothing with short sleeves for easy access to your arm.
- Continue your regular medications unless your doctor instructs otherwise.
Step-by-Step Procedure
Here is what happens during the blood collection process:
- A phlebotomist will ask you to sit comfortably and confirm your details.
- A vein in your arm is selected, and a rubber strap (tourniquet) is placed above it to make the vein more visible.
- The skin over the vein is cleaned with an antiseptic swab, and a sterile needle is gently inserted.
- A small amount of blood (around 3 ml) is drawn into a yellow-top gel tube. Once enough blood is collected, the tourniquet is removed.
- The needle is withdrawn, and a cotton ball or bandage is placed on the puncture site. The whole process usually takes just a few minutes.
- The serum sample is separated and stored refrigerated between 2 and 8 degrees Celsius before being dispatched to the laboratory for processing using an EIA (enzyme immunoassay) method.
Factors That Can Affect Accuracy
- Haemolysis (breakdown of red blood cells in the sample) can falsely raise sTfR levels.
- Recent significant blood loss may cause temporarily elevated readings.
- Lipid-heavy or jaundiced samples may not be accepted by the laboratory.
- Individuals living at high altitudes or from certain ethnic backgrounds may have naturally higher baseline values.
- Chronic lymphocytic leukaemia (CLL) can make sTfR results unreliable due to tumour burden effects.
Understanding Your Soluble Transferrin Receptor Test Results
Your results should always be reviewed alongside your full clinical picture. The table below shows the general reference ranges used for this test:
| Parameter | Males | Females | Unit |
|---|---|---|---|
| sTfR | 2.2 to 4.5 | 1.8 to 4.6 | mg/L |
Values in infants and children tend to be higher than those in adults. As sTfR test assays are not standardised across laboratories, results from different labs should not be compared directly.
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
Inflammation and chronic illness raise ferritin but do not appreciably affect sTfR, making this test particularly useful when a patient has both anaemia and a chronic inflammatory condition. However, in patients with chronic lymphocytic leukaemia, sTfR is strongly influenced by tumour burden and should not be used to screen for iron deficiency in this group.
How to Maintain Healthy Levels
Supporting healthy iron levels is a matter of balanced nutrition and simple daily habits:
- Include iron-rich foods in your diet, such as leafy vegetables, lean meats, lentils, and fortified cereals.
- Eat vitamin C-rich foods (such as citrus fruit, tomatoes, or amla) alongside iron-rich meals to improve iron absorption.
- Limit tea and coffee consumption during meals, as they contain compounds that can reduce iron absorption.
Lupin Diagnostics Soluble Transferrin Receptor Test Price and Home Collection
The Soluble Transferrin Receptor test cost at Lupin Diagnostics starts at ₹2,380, and home sample collection is available across cities. The table below lists indicative prices by city:
| City | Approximate Price (₹) |
|---|---|
| BHOPAL | 2380 |
| CHENNAI | 2380 |
| HYDERABAD | 2380 |
| KOLKATA | 2380 |
| NAVI MUMBAI | 2380 |
| PUNE | 2380 |
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 Soluble Transferrin Receptor 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
Soluble Transferrin Receptor test home collection is available across cities through Lupin Diagnostics' network of trained phlebotomists who visit your address at a time convenient to you. All samples are processed in NABL-accredited laboratories to ensure quality results. Once ready, your digital report is shared directly via email or WhatsApp.
Frequently Asked Questions
The sTfR test helps detect iron deficiency at the cellular level and assists in distinguishing iron deficiency anaemia from anaemia of chronic disease. It is particularly useful when standard tests, such as ferritin, are difficult to interpret due to inflammation or an underlying chronic condition.
Ferritin is a reliable marker for iron stores in healthy individuals, but it rises with inflammation and chronic illness regardless of actual iron levels. The Soluble Transferrin Receptor test is not affected by inflammation in the same way, so it gives a clearer picture of true iron deficiency in patients who are unwell.
No fasting is needed. You can eat and drink as normal before the test. If you are having other tests on the same day, check with your doctor whether those require fasting.
A trained phlebotomist draws a small amount of blood from a vein in your arm. The process takes only a few minutes and causes minimal discomfort. A bandage is placed on the site afterwards, and you can resume normal activities right away.
An elevated sTfR level generally indicates that the body's cells are not receiving enough iron. This is most commonly seen in iron deficiency anaemia but can also occur in conditions involving increased red blood cell production, such as haemolytic anaemia or thalassaemia. Your doctor will interpret the result alongside other tests.
Reports for the Soluble Transferrin Receptor test are delivered within 4 days. Results will be sent to you digitally via email or WhatsApp.
For patients being treated for iron deficiency or monitored for chronic disease, repeat testing every 3 to 6 months is generally appropriate. Your doctor will advise based on your results and the nature of your condition.
Soluble Transferrin Receptor Test: Booking, Price, and Results
