Rh Antibody Titre Test: Booking, Price, and Results
About Rh Antibody Titre Test: Booking, Price, and Results
| Field | Value |
|---|---|
| Also Known As | Rh Titre Test, Anti-D Titre Test, Indirect Coombs Titre Test |
| Sample Type | Venous blood (serum) |
| Fasting Required | No fasting needed |
| Report Time | 1 to 4 days |
| Recommended For | Rh-negative pregnant women; individuals after Rh-incompatible blood transfusion |
| Price | Starting at ₹1200 |
What Is a Rh Antibody Titre Test?
The Rh antibody titre test measures the level of Rh antibodies present in a person's blood. These antibodies are proteins the immune system produces when it encounters Rh-positive red blood cells that it does not recognise as its own.
The test is most commonly ordered for Rh-negative pregnant women and for people who have received an Rh-incompatible blood transfusion. It is also known as the Rh titre test, the anti-D titre test, or the indirect Coombs titre test.
What Does a Rh Antibody Titre Test Measure?
The Rh titre test analyses two key things in your blood sample. The following components help determine whether Rh sensitisation has occurred and, if so, the strength of the immune response.
| Component | What It Tells Us |
|---|---|
| Rh (Anti-D) Antibodies | Whether your immune system has produced proteins against Rh-positive red blood cells |
| Titre Level | The concentration of those antibodies, which is reported as a ratio (e.g., 1:4, 1:16, 1:32); the higher the number, the greater the antibody concentration |
The titre is measured by serially diluting the blood serum and testing each dilution against Rh-positive red blood cells. The result is the highest dilution at which cell clumping (agglutination) is still visible.
Why Is a Rh Antibody Titre Test Done?
Doctors order the Rh antibody titre test to determine whether Rh antibodies are present in a person's blood and to monitor how their levels change over time.
Common Symptoms That May Require This Test
The anti-D titre test is not ordered based on symptoms in the mother. Instead, it is ordered when risk factors are identified. The following signs in a foetus or newborn may prompt further investigation:
- Pallor (pale skin) and fatigue, which can point to anaemia caused by red blood cell destruction
- Jaundice, a yellowing of the skin and eyes in a newborn
- Fluid accumulation in foetal body tissues (a condition called hydrops foetalis)
- An enlarged liver or spleen detected on ultrasound
- A previous pregnancy affected by Rh-related complications
Conditions This Test Can Help Detect
The indirect Coombs titre test helps identify and monitor the following conditions:
- Rh sensitisation, where the mother's immune system has developed antibodies against Rh-positive blood
- Haemolytic disease of the foetus and newborn (HDFN), a condition in which maternal antibodies attack foetal red blood cells
- Hydrops foetalis, a serious complication in which the baby develops abnormal fluid build-up in the tissues
- Risk of a haemolytic reaction following an Rh-incompatible blood transfusion
Rh Antibody Titre Test During Pregnancy
The Rh antibody titre test is a standard part of antenatal care for Rh-negative women. A blood group and antibody screen is recommended during the first trimester and again at 28 weeks of pregnancy. If an Rh antibody is detected, the titre test is used to measure its strength. Titres are typically checked monthly for up to 24 weeks, then every two weeks thereafter.
How to Prepare and What to Expect
No special preparation is required for this test. Here is what you need to know before your appointment.
Do You Need to Fast?
No, fasting is not required. You can eat and drink normally before the Rh antibody titre test. Unless your doctor has prescribed additional tests alongside this one, there are no dietary restrictions. Always follow the instructions given by your doctor or the diagnostic centre at the time of booking.
Practical Tips Before Your Test
A few simple steps will help the process go smoothly:
- Carry your medical history, including details of any previous pregnancies, blood transfusions, or earlier Rh antibody tests
- Tell your doctor and the lab about all medications you are currently taking
- If you have recently received Rh immunoglobulin (RhIg), let the lab know, as this can affect the result
- Wear a loose-sleeved top for easy access to your arm
Step-by-Step Procedure
The blood collection is quick and straightforward. Here is what happens during the visit:
- A trained phlebotomist will ask you to sit comfortably and roll up your sleeve.
- A soft band (tourniquet) is tied around your upper arm to make the vein more visible. The skin is cleaned with an antiseptic.
- A fine needle is gently inserted into a vein, usually on the inside of the elbow, and the tourniquet is released.
- A small amount of blood is drawn into a collection tube. The needle is then removed, and a cotton ball or plaster is placed on the site.
- Your labelled sample is packed and sent to the laboratory.
- In the lab, your serum is mixed with Rh-positive red blood cells in a series of dilutions and observed for clumping.
Factors That Can Affect Accuracy
Certain factors can influence the reliability of the Rh antibody titre test result. These include:
- A haemolysed (broken red cell) or clotted sample due to improper collection
- Lipaemia (excess fat in the blood) at the time of collection
- Recent administration of RhIg, which may cause a false positive for anti-D antibodies
- Delayed processing, as samples are typically valid for up to 72 hours
Understanding Your Rh Antibody Titre Test Results
Your results should always be reviewed alongside your medical history and clinical context. The table below shows how titre levels are generally interpreted.
| Titre Level | Interpretation |
|---|---|
| Negative (no antibodies detected) | No Rh sensitisation |
| 1:4 or lower | Possible early sensitisation; clinical review advised |
| 1:8 or lower | Can be managed with regular monitoring of maternal antibody levels |
| 1:16 or higher | Foetal wellness assessment is required (e.g., Doppler ultrasound) |
| 1:64 or higher | May indicate a need for further intervention; specialist review 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
A few specific situations can affect how Rh antibody titre test results are read:
- If you have recently received RhIg, anti-D antibodies may appear in your blood. This can look like sensitisation but is actually a temporary effect of the injection. Always inform your doctor and the lab.
- In a first sensitised pregnancy, titre levels tend to more reliably reflect the severity of foetal impact than in later pregnancies.
- If a previous pregnancy was affected by foetal anaemia, titre values alone may not predict severity in the current pregnancy, and other monitoring methods will be needed.
How to Maintain Healthy Levels
While Rh sensitisation cannot be reversed, the following steps can reduce risk:
- Attend all scheduled prenatal appointments so that antibody levels can be tracked early
- Always inform your doctor and blood bank of your Rh-negative status before any transfusion or invasive procedure
- Discuss the timely use of RhIg with your doctor, as it is typically given around 28 weeks and within 72 hours of delivery, miscarriage, or similar events
Lupin Diagnostics Rh Antibody Titre Test Price and Home Collection
The Rh antibody titre test price at Lupin Diagnostics starts at ₹1200, with home sample collection available across cities. The table below shows approximate prices in major Indian cities.
| City | Approximate Price (₹) |
|---|---|
| Mumbai | ₹1200 |
| Bengaluru | ₹1200 |
| Hyderabad | ₹1200 |
| Chennai | ₹1200 |
| Kolkata | ₹1200 |
| Pune | ₹1200 |
Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
How to Book
Booking your Rh titre test with Lupin Diagnostics is simple:
- 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 blood collection for the Rh antibody titre test across multiple cities in India. All samples are processed in NABL-accredited laboratories by trained professionals. Your digital report is delivered directly to your email or WhatsApp once ready.
Frequently Asked Questions
The Rh antibody titre test is used to detect and measure the level of Rh antibodies in a person's blood. It is most commonly ordered during pregnancy to check whether an Rh-negative mother has developed antibodies that could affect an Rh-positive baby. It is also used to assess risk after an Rh-incompatible blood transfusion.
This test is recommended for Rh-negative pregnant women whose initial antibody screen is positive. It is also ordered for anyone who may have received blood that was not fully Rh-matched. Your doctor will advise whether you need this test based on your blood group and medical history.
Once Rh antibodies are detected, the test is typically repeated every month until 24 weeks of pregnancy. After that, it is usually done every two weeks. Your doctor may adjust the schedule depending on your titre levels and clinical findings.
A critical titre is the level at which there is a meaningful risk of serious complications for the baby, such as hydrops foetalis. A titre of 1:16 or higher is generally considered critical and usually requires foetal monitoring, such as Doppler ultrasound. Your doctor will guide you on the next steps.
Yes, in most cases it can be prevented. RhIg (Rh immunoglobulin) given at the right time, around 28 weeks and within 72 hours of delivery or pregnancy loss, can reduce the risk of sensitisation significantly. Studies show that the timely administration of RhIg reduces the rate of Rh alloimmunisation to below 2%.
No, the test poses no risk to the baby. A small blood sample is taken from the mother's vein and poses no more risk than a routine blood draw. The information gained from the Rh titre test helps doctors take steps to protect foetal health.
Rh Antibody Titre Test: Booking, Price, and Results
