Lactose Intolerance Test

Test type
Lab Test

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Collection method

We offer several different options of testing methods. This test is done with Breath. See all tests done with Breath by following the link.

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Do you suspect that you might be lactose intolerant? The Lactose Intolerance Test from GetTested stands out by accurately identifying both hereditary and acquired lactose intolerance—the latter being a condition that can emerge over time.

If you’re uncertain whether your sensitivity to dairy is due to lactose intolerance, an allergy, or another form of intolerance, consider combining this test with our Allergy & Intolerance Test, as dairy can trigger various reactions.

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EAN: 0616612785619 SKU: B110 Categories: , Tag:

What is measured in the Lactose intolerance test?

About the Lactose Intolerance Test by GetTested

The Lactose Intolerance Test by GetTested is a comprehensive test that measures various types of Lactose Intolerance, such as hereditary lactose intolerance and acquired lactose intolerance. 

Lactose intolerance arises when the small intestine struggles with processing lactose, the sugar in milk. It’s different from cow’s milk allergy, which requires a distinct approach to treatment. 

Symptoms of Lactose intolerance

Though lactose intolerance is mostly harmless, the symptoms can cause significant discomfort. The most common symptoms include:

  • Stomach pain
  • Diarrhoea
  • Flatulence 
  • Nausea 
  • Bloating 

Causes of Lactose Intolerance

Lactose intolerance stems from a deficiency in the lactase enzyme, essential for digesting lactose in dairy products. Usually, the lactase enzyme turns the milk sugar, or lactose, into two simple sugars that are absorbed into the bloodstream. However, if you lack lactase, the lactose remains undigested and thus stays in the intestine, where it interacts with normal bacteria. This is what causes the uncomfortable symptoms. Reducing or avoiding lactose often alleviates these symptoms.

Lactose Intolerance in Children

Notably, lactose intolerance is rare in children under five. If any stomach issues arise in this age group, it often stems from cow's milk allergy. Accurate diagnosis by GetTested ensures appropriate dietary management.

Forms of Lactose Intolerance

Primary Lactose Intolerance

Predominantly, this hereditary form is most common in regions like Asia, Africa, and southern Europe. It arises from a gradual decrease in lactase production, typically appearing in late childhood to early adulthood.

The decrease in lactase production normally happens, because children get older and gradually start replacing milk with other foods and drinks. Usually the lactase levels remain high enough to still digest a normal amount of dairy products, but this is not the case with Primary Lactose Intolerance, in which lactase production has massively dropped by adulthood. 

Secondary Lactose Intolerance

This type of Lactose Intolerance is a temporary form and can develop from untreated intestinal diseases, infections or bacterial overgrowth. Some of the diseases that can instigate lactose intolerance are celiac disease and Crohn’s disease.  

It usually resolves after treating the underlying condition, although it may take some time.

Congenital Lactose Intolerance
Conversely, this rare, genetic condition means the body cannot produce lactase at all. It is a disorder passed down through an inheritance pattern called autosomal recessive. This means both the mother and father must pass on the gene variant for the child to be affected by this disorder. This condition requires a lifelong commitment to a lactose-free diet.

Lactose Intolerance vs. Cow's Milk Allergy

Commonly, people confuse these two conditions. Lactose intolerance is related to the body's reaction to milk sugar, while cow's milk allergy involves an immune response to milk proteins. 

Cow’s milk allergy, like other food allergies, happens because the immune system overreacts to cow’s milk. This means that drinking cow’s milk can trigger an allergic reaction. Some of the symptoms of Cow’s milk allergy are similar to the symptoms of Lactose Intolerance, as both can cause digestive problems. However, cow’s milk allergy can also cause symptoms such as skin rash, swelling of the lips, face or skin around the eyes or a runny nose. Cow’s milk allergy is most common in young children. Usually they grow out of it. 

To get an accurate diagnosis, GetTested offers both lactose intolerance tests and milk allergy tests. 

Testing Methods by GetTested

GetTested conducts two type of tests:

Breath Tests
GetTested's breath test measures hydrogen and methane after consuming a lactose solution. Increased levels in these gases suggest lactose intolerance.

DNA Tests
Alternatively, DNA testing identifies hereditary lactose intolerance but does not confirm active intolerance.

Conducting the Test

The lactose intolerance test involves collecting breath samples over three hours after drinking a lactose solution, provided by GetTested. For optimal results, it's best conducted on an empty stomach. Subsequently, GetTested's lab analyses your samples, and you receive your results digitally.


How is the Lactose Intolerance test carried out?

Our Lactose intolerance test is a home test kit. After ordering, we will send you a kit with everything you need to collect the breath samples. Then, simply return your sample to us in the pre-paid envelope.

Anything to consider before taking the test?

The test should be taken on an empty stomach.

When should I collect the samples?

Your test kit comes with 5 glass containers. You will blow into the first container before drinking the solution (in the morning on an empty stomach). The remaining 4 should be blown into certain times after drinking the solution: Glass 2: 30 minutes after drinking the solution. Glass 3: 1 hour after drinking the solution. Glass 4: 2 hours after drinking the solution. Glass 5: 3 hours after drinking the solution.

How quickly will I receive my results?

Once we receive your sample, average response time is 10-15 business days to receive results.

Example Report

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Example of Lactose Intolerance Test


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  • Samuel
    Being a milk-lover, the mere suspicion of lactose intolerance felt like a cruel joke. However, persistent discomfort post dairy indulgence pushed me to seek clarity. The Lactose Intolerance Test stood out with its stellar reviews and ease of use. The experience, from receiving the kit to sending it back, was streamlined and stress-free. The results confirmed my suspicions but went a step further, shedding light on the extent of my intolerance. Thanks to the actionable insights from the test, I've been able to modify my dairy consumption, opting for lactose-free variants. It's been a game-changer, drastically reducing my bouts of discomfort and bloating.
  • Adriana Ruiz
    Every time I enjoyed my favorite latte or dug into a cheesy pizza slice, I was left wrestling with discomfort. Friends joked about possible lactose intolerance, but I brushed it off. Finally, after a particularly painful episode post ice-cream, I decided to seek answers. The Lactose Intolerance Test proved to be an invaluable tool. From the outset, the process was smooth — the kit was straightforward and easy to use. When the results rolled in, they confirmed my suspicions: I was indeed lactose intolerant. More than just a diagnosis, the detailed breakdown provided me with a deeper understanding of my body's reactions. Armed with this knowledge, I've made dietary shifts, finding great alternatives and minimizing discomfort. If you're in a similar boat, don't hesitate. This test was a game-changer for me. :D

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