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LDL Subfractions Blood Test
LDL Subfractions Blood Test contents
Results on my.medichecks health portal
LDL Subfractions Blood Test

LDL Subfractions Blood Test

This test separates LDL particles into distinct groups (sub-fractions) based on their size and density. It is useful in assessing cardiovascular risk in people who have a personal or family history of early heart disease, especially if their total and LDL cholesterol values are not significantly elevated.
Blood sample 1 test included 14 working days turnaround


Lipoproteins are particles that are responsible for transporting fat molecules (including cholesterol and triglycerides) in the blood. The size and shape of lipoprotein particles change as they circulate in the blood - as they take on and release different fat molecules.

This test separates LDL particles into distinct groups (sub-fractions) based on their size and density. The smaller and denser particles are thought to be better able to penetrate the walls of blood vessels, resulting in a build up of atheroma in the walls of the vessel. People who predominantly have small dense particles are at increased risk of cardiovascular disease compared to those who predominantly have lighter and larger LDL particles.

This is not a diagnostic test but may help to indicate higher risk for cardiovascular disease in the future.

Cholesterol Status

3 simple steps

  • Take the test

    Take the test - either using your kit or visit a clinic.
  • Post your sample

    Send your sample in the freepost pack to our fully accredited lab.
  • Get your results

    Get your doctor reviewed results on
Expert interpretation<br>
of your results

Expert interpretation
of your results

One of our team of doctors will review your results and give you personalised advice based on your medical history, lifestyle and health and fitness goals.

Your personal<br>
health centre

Your personal
health centre

Discover the easy way to track your health through our online portal, View your results with doctor's advice, monitor any changes over time and see the improvements you can make to your health with simple lifestyle changes.

Questions? Let us help

Questions? Let us help

Our customer care team are on-hand to help you find the test that's right for you. Get in touch via phone, live chat or email.

you can trust

Trusted by the NHS and private clinics alike, you can be sure of the highest testing standards from our partner laboratories

What our customers say

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Our tests are not a substitute for seeing your doctor, especially if you are suffering symptoms. Our doctors will interpret your results based on the information you have provided, but will not diagnose, consult or provide any treatment. You will be advised to see your doctor for any necessary follow-up action.