Liver blood tests (formerly known as liver function tests – LFTs)

What are liver blood tests?

Liver blood tests look at how well the liver is functioning and can indicate whether there is any damage or inflammation inside the liver.

Until recently, liver blood tests were referred to as liver function tests, or LFTs.

However, as most patients with abnormal liver blood tests actually have normal function of the liver, this term was felt to be unhelpful and often led to unnecessary concern. Therefore the term liver function tests, or LFTs, has been replaced by liver blood tests. This is a very important change, and the medical profession is working hard to ensure the new term is widely accepted and used.

Calling these tests liver blood tests is a more accurate way of describing what the test actually does and uses less frightening language.


The British Liver Trust does not recommend home liver tests offered by private companies. The results of these tests do not provide a comprehensive assessment for determining the presence of liver disease. If you have concerns about your liver health, we recommend that you consult your GP. They will conduct a range of tests, consider your medical history, and integrate all the results to make an informed decision about the necessity of additional tests or potential treatment.