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Referrals for familial hypercholesterolaemia (FH) genomic testing

It is vital for us all to work together to ensure that the NHS genomic medicine service provides the most efficient and effective support for patients.

Recently, we shared guidance on making efficient referrals for genomic testing. A review within our labs has now identified that testing for familial hypercholesterolaemia (FH) is an area where particular care is needed when making referrals.

We have prepared the guidance below to help you when referring patients for testing:

Diagnostic testing

If a patient has no known relatives diagnosed with FH, you should request diagnostic testing. Please use the left-hand box of the ‘Genomic Test Required’ section of the FH test order form:

FH diagnostic testing

Cascade testing

If referring relatives of a patient with a confirmed genetic diagnosis of FH, you should request cascade testing. These tests are processed differently within the lab and it is important to indicate that there is a known genetic diagnosis in a family for correct information to be given to family members. Please use the right-hand section of the ‘Genomic Test Required’ section of the FH test order form:

FH cascade testing

We are only able to process tests for patients that are eligible for testing in accordance with the National Genomic Test Directory. Therefore, you must provide appropriate information to support a patient’s eligibility.

If we are unable to process your referral, you will be notified by the lab that DNA from samples has been extracted and stored. We will only proceed with testing once we have suitable evidence that the patient is eligible.

For additional support on making referrals please see our FH information zone webpages, or join our FH Genomics Community of Practice.

We will have a dedicated session on Thursday 11 September at 1pm on What makes a good genomic test referral? Practical support and guidance on FH genomic testing. Please register your free place here. (opens in a new tab)

FH CoP - 11 September 2025