It's usually known as a full blood count (FBC) in the UK: > Full blood count (FBC): This is a test to check the types and numbers of cells in your blood, inclu

It's usually known as a full blood count (FBC) in the UK: > Full blood count (FBC): This is a test to check the types and numbers of cells in your blood, including red blood cells, white blood cells and platelets. This can help give an indication of your general health, as well as provide important clues about certain health problems you may have. https://www.nhs.uk/conditions/blood-tests/types/ https://www.nhs.uk/conditions/blood-tests/types/ I've had it done a few times, and the page the NHS links to describes it as "one of the most commonly requested tests".