Blood group basics

Our animated videos explain why we have A, B, AB and O blood types and the difference between Rh positive and negative.

Whether you’ve known your blood type for years, have only just found out what it is, or it’s something you don’t yet know, it’s worth taking the opportunity to learn more.

After all, we all have blood – there’s about five litres of it in the average human body – so why not find out what ABO’s all about and why sometimes it’s a good thing to be negative?

Our animated videos explain why we have A, B, AB and O blood types and the difference between Rh positive and negative.

Blood’s vitally important stuff, so if you want to know more about it, sit back, relax, and enjoy The Type is Right:

Now you know your ABOs, find out what it means to be Positive and Negative with our alien experts here:

To find out more about blood donation, visit the blood types page of our website.