Blood Group
This test identifies your ABO and Rh blood type. It is essential for transfusions, pregnancy, and medical safety.
Turnaround time
3-4 days
Biomarkers count
1
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Details about Blood Group
The Blood Group Test determines your ABO blood type (A, B, AB, or O) and Rhesus (Rh) factor (positive or negative). Knowing your blood group is essential for medical care, pregnancy planning, transfusions, and emergencies. Testing is performed in a UKAS-accredited laboratory, with fast results and an optional GP consultation.
What is a Blood Group Test?
A blood group test identifies specific antigens on the surface of red blood cells that define your blood type. The two most important systems are:
- ABO system: A, B, AB, or O
- Rhesus (Rh) system: Positive (+) or Negative (–)
Together, these determine your full blood group (e.g., O-negative, A-positive). Blood group information is critical for:
- Safe blood transfusions
- Pregnancy and antenatal care
- Organ transplantation
- Emergency medical treatment
At London Blood Tests, blood typing is carried out using validated laboratory methods in line with UK transfusion standards.
Benefits of the Blood Group Test
- Essential Medical Information
Knowing your blood group is vital in emergencies. - Supports Pregnancy Planning
Rh status is important for maternal–fetal compatibility. - Required for Blood Donation
Confirms eligibility and compatibility. - Useful for Surgery & Hospital Care
Ensures safe transfusion if needed. - Simple One-Time Test
Blood group does not change over time. - Fast, Reliable Results
Performed in a UKAS-accredited laboratory. - Optional GP Consultation for Guidance
Discuss implications if required.
Why Do I Need a Blood Group Test?
You may need a blood group test if you:
- Do not know your blood type
- Are planning a pregnancy
- Are donating blood or organs
- Are preparing for surgery
- Want your blood group on medical records
- Want personal health information for travel or emergencies
Situations where blood group knowledge is essential:
- Pregnancy (especially Rh-negative mothers)
- Emergency medical treatment
- Transfusions and major procedures
Because blood group information is lifelong, testing provides permanent, valuable health knowledge.
How the Test Works
In-Clinic Testing at London Blood Tests
- Book Your Appointment
- Online or phone booking
- No fasting required
- Pre-Test Review
- No preparation needed
- Sample Collection
- Venous blood sample taken by a trained phlebotomist
- Takes 5 minutes
- Laboratory Analysis
- ABO and Rh typing performed in a UKAS-accredited laboratory
- Quality Control
- Results verified before release
- Results Delivery
- Results typically available within 1–2 business days
- Optional GP Consultation
- Discuss implications for pregnancy or medical care
At-Home Blood Draw (Home or Hotel Phlebotomy – UK-Wide)
- Book a Phlebotomist Visit
- Convenient home or hotel appointment
- Professional Collection
- Sample taken safely and discreetly
- Secure Transport
- Sample couriered same day
- Laboratory Testing
- Same analysis as clinic testing
- Results & Follow-Up
- Results delivered online, GP review optional
Your Blood Group Results – Explained
Results are reported as:
- ABO Type: A, B, AB, or O
- Rh Factor: Positive (+) or Negative (–)
Examples:
- O-negative: universal donor for red cells
- AB-positive: universal recipient for red cells
- Rh-negative: important in pregnancy monitoring
Blood group results remain valid for life and can be used for future medical care.
How It Works
Simple steps to get your results
Book Online
Choose your test online and book in seconds. Select your preferred clinic location or home visit option.
Visit or Test at Home
Attend one of our UK or London clinics, arrange a home nurse visit, or use a finger-prick kit where available.
Get Your Results
Your sample is analysed by accredited UK laboratories, with secure results delivered directly to you.
Take control of your health with London Blood Tests
WhatsApp UsHow to Prepare for Your Test
Follow these guidelines for accurate results
Sample Timing
Where possible, attend your blood test between 7am and 12pm. Please wait until any short-term illness or infection has fully resolved before testing. Avoid intense exercise for 24–48 hours beforehand, as this can affect certain markers.
Fasting & Hydration
Fasting is not always required, but some tests may recommend it. If fasting is advised, avoid food for 8–12 hours before your appointment and drink water only. Stay well hydrated, as this helps with sample collection and accuracy.
Medications & Supplements
Continue prescribed medications unless advised otherwise by your clinician. Avoid vitamin, mineral, or biotin supplements for at least 24–48 hours before your test, as these can interfere with results. If you are unsure about any medication or supplement, please let us know before your appointment.
Hormones & Menstrual Cycle
For hormone-related tests, timing within your menstrual cycle may be important. If relevant, follow any specific guidance provided on your test page.
If you have any questions or special circumstances, our team is happy to advise before your appointment.