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Genetic Lactose Intolerance

Energy & Nutrition

160.00

Identify inherited lactose intolerance with our genetic test for £160. One-time lifetime test, UKAS-accredited lab analysis, GP review optional.

Turnaround time

4-6 weeks

Biomarkers count

2

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Same-Day Appointments

UKAS Accredited Labs

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Under 18? Patients under 18 can only be seen at GB Medlabs and Clinilabs, Monday to Friday only.

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Details about Genetic Lactose Intolerance

Genetic Lactose Intolerance Test | London Blood Tests

At London Blood Tests, we are dedicated to providing comprehensive diagnostic services to help you understand your health better. One of our key offerings is the Genetic Lactose Intolerance Test, designed to identify whether your body can effectively digest lactose, the sugar found in milk and dairy products. If you experience discomfort after consuming dairy, this test can provide the answers you need to make informed dietary choices and improve your quality of life.

About the Test

Our Genetic Lactose Intolerance Test identifies specific SNPs (Single Nucleotide Polymorphisms) in the MCM6 gene, namely C13910T and G22018A. These genetic markers are associated with lactose intolerance, allowing you to understand your body's ability to digest lactose found in dairy products.

The C13910T and G22018A are specific single nucleotide polymorphisms (SNPs) in the DNA sequence. They represent a change in a single nucleotide at a particular position in the genome:

• C13910T: At position 13910, a Cytosine (C) is replaced by Thymine (T). This SNP is associated with lactase persistence (the ability to digest lactose into adulthood).

• G22018A: At position 22018, a Guanine (G) is replaced by Adenine (A). This SNP can also be related to lactase persistence or other genetic traits.

The MCM6 gene encodes a protein involved in DNA replication. It's located near the LCT gene (which encodes lactase), and certain SNPs in the MCM6 gene region (like C13910T) regulate the expression of the LCT gene, affecting lactase persistence.

Benefits of Genetic Lactose Intolerance Test

• Accurate Diagnosis: Understand if your gastrointestinal symptoms are due to lactose intolerance.

• Personalized Diet: Make informed dietary choices to improve your overall health and well-being.

• Quick Results: Receive your results within 7 days, enabling you to take swift action.

The Process

• Book an Appointment: Schedule your test online or via phone.

• Sample Collection: Visit our clinic for a blood sample collection or arrange a home visit for an additional £60.

• Laboratory Analysis: Our expert team analyzes your sample for the C13910T and G22018A SNPs.

• Receive Results: Get your results within 7 days, complete with a detailed report and dietary recommendations.

Why Choose London Blood Tests?

• Experienced Professionals: Our team of specialists ensures precise and reliable testing.

• Convenient Locations: Easily accessible clinics across London.

• Comprehensive Support: From booking to results, we provide support at every step.

Ideal For

• Individuals experiencing gastrointestinal issues after consuming dairy.

• Those with a family history of lactose intolerance.

• Anyone looking to understand their genetic predisposition to lactose intolerance.

How to Get Started

1. Schedule Your Test: Book online or call us to arrange your test.

2. Choose Your Collection Method: Decide between a clinic visit or a home visit for an additional fee.

3. Prepare for the Test: Follow any pre-test instructions provided.

4. Get Tested: Visit the clinic or have a professional come to your home to collect your sample.

5. Receive Your Results: We will send your results via email within 7 days.

Understanding your genetic predisposition to lactose intolerance can significantly enhance your quality of life. At London Blood Tests, we offer a quick, reliable, and convenient way to diagnose lactose intolerance, helping you make better dietary choices. Book your test today and take the first step towards a healthier, more comfortable life.

How It Works

Simple steps to get your results

1

Book Online

Choose your test online and book in seconds. Select your preferred clinic location or home visit option.

2

Visit or Test at Home

Attend one of our UK or London clinics, arrange a home nurse visit, or use a finger-prick kit where available.

3

Get Your Results

Your sample is analysed by accredited UK laboratories, with secure results delivered directly to you.

Take control of your health with London Blood Tests

How to Prepare for Your Test

Follow these guidelines for accurate results

Sample Timing

Where possible, attend your blood test between 7am and 12pm. Please wait until any short-term illness or infection has fully resolved before testing. Avoid intense exercise for 24–48 hours beforehand, as this can affect certain markers.

Fasting & Hydration

Fasting is not always required, but some tests may recommend it. If fasting is advised, avoid food for 8–12 hours before your appointment and drink water only. Stay well hydrated, as this helps with sample collection and accuracy.

Medications & Supplements

Continue prescribed medications unless advised otherwise by your clinician. Avoid vitamin, mineral, or biotin supplements for at least 24–48 hours before your test, as these can interfere with results. If you are unsure about any medication or supplement, please let us know before your appointment.

Hormones & Menstrual Cycle

For hormone-related tests, timing within your menstrual cycle may be important. If relevant, follow any specific guidance provided on your test page.

If you have any questions or special circumstances, our team is happy to advise before your appointment.

Frequently Asked Questions

It confirms genetic cause but does not assess current gut damage.

It detects inherited lactose intolerance, not secondary causes.

No. No dietary preparation is needed.

Yes. Your genetics do not change.

Yes. It can be performed at any age.

It may explain lactose-related symptoms but not other intolerances.

Yes. At-home phlebotomy is available across the UK.

Testing is performed in UKAS-accredited laboratories using validated genetic methods.

Results are typically available within 10–14 business days.

A GP consultation is optional, but recommended for dietary guidance.