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The lactose intolerance genetic test analyses single nucleotide polymorphisms (SNPs) in the MCM6 gene (e.g., -13910 C/T) and LCT gene, which regulate lactase enzyme production and indicate risk of primary lactose intolerance.
Sample collection: A small blood sample or cheek swab is taken by a kit at home or in one of our UK clinics. Our kit includes everything needed; simply return the sample in the pre-paid envelope. Results include a personalised doctor’s interpretation.
Age restriction: Adults 18+ only (guardian consent required for minors).
The lactose intolerance genetic SNP panel is a DNA test that identifies genetic variants linked to reduced lactase production, causing difficulty digesting lactose in dairy. It distinguishes primary (genetic) intolerance from secondary causes. Your doctor may order this test if you have symptoms like bloating or diarrhoea after dairy. The test helps guide dietary changes. Swift Blood Tests processes samples rapidly, with results and a doctor’s report typically within 2-3 weeks.
ariants associated with adult-onset lactose intolerance.
checks for congenital or primary intolerance.
determines high or low genetic risk for lactose malabsorption.
A blood sample or cheek swab is required. No special patient preparation (such as fasting) is needed. Simply follow kit instructions. Send samples via the next-day laboratory service.
In individuals with symptoms after dairy consumption.
From secondary intolerance due to gut issues.
For dietary advice or enzyme supplements.
Such as those with family history or from populations with high prevalence.
You may be advised to take a lactose intolerance genetic test if you have any of the following signs or risk factors: - Symptoms after dairy: Bloating, diarrhoea, abdominal pain, or gas. - Family history: Relatives with lactose issues. - Congenital suspicion: In infants with severe symptoms from birth. - Unexplained gut problems: Persistent discomfort linked to milk products. For example, a patient with bloating after cheese may have risk SNPs. Similarly, someone avoiding dairy might confirm genetic cause. Your doctor will interpret the results alongside your history and may recommend dietary trials.
If you can’t find the test you’re looking for, simply give us a call and our support team will guide you to the right option. We’re here to ensure you get the correct test quickly and confidently.
It analyses DNA for variants in genes like MCM6 and LCT that affect lactase production, indicating risk of lactose intolerance.
It is often ordered for symptoms like bloating after dairy or to confirm genetic cause.
No special preparation is usually required. You can eat and drink normally.
A cheek swab or small blood sample is taken. It is quick and simple. For blood, you may feel a brief pinch.
Risks are very low for swab; minimal for blood, like slight bruising.
Results are typically available within 2-3 weeks. Swift Blood Tests provides a detailed doctor’s report. You will be notified by email or phone.
Yes. Swift Blood Tests offers a convenient home kit with instructions. Return by post.
Genetic results are stable, but discuss symptoms for interpretation.
Mutations indicate high risk of intolerance; no mutations suggest other causes.
This test is intended for adults (18+). For children, consult a paediatric specialist or contact us.
Amazing service, had my blood taken by Sarah, so quick and convenient. I will be using Swift bloods again and will be recommending to my friends and family. Sarah was. Very professional also friendly, she was really lovely. Swift bloods are definitely the way to go.Thank you very much .
First Class Service
Friendly and helpful staff. Arranged an appointment for the next day at home. Joanne arrived for my appointment to take the required blood tests and delivered them to my local hospital within 35 minutes. I cannot recommend Swift Blood Tests highly enough.
I can’t praise this company enough! Jo arrived on time and was so lovely, easy to talk to and efficient. The whole process from booking the appointment ( and getting one for the following day) to receiving a text that the bloods had arrived at the hospital was really impressive. I would recommend her to anyone and will definitely use this service again-
This is an amazing service which I heard about through a recommendation and I will 100% be recommending to friends. I booked in late one even and Joanne came early the next morning. I work in London so this was perfect to work around unusual business hours. Joanne was so efficient and friendly. Thank you!
Organised a visit for my disabled elderly mother. Trying to get a local appointment through the NHS swift queue system would have meant several weeks wait. This service was booked online within minutes and the service was prompt, efficient and very professionally carried out by a friendly nurse