Blood test lactose intolerance

Blood test lactose intolerance

People want to know is there a blood test for lactose intolerance, this post gives all the information on lactose intolerance blood tests. Lactose intolerance is extremely common amongst Asians and Africans (about 60-80%) less so in Americans (about 44%) and in about 5-17% of Europeans, there is a blood test from Health for lactose intolerance that can help to diagnose the condition and allow you to make changes to your diet that will alleviate the symptoms.

What is lactose intolerance

Basically, lactose intolerance is a disorder of the digestive system and is caused when the body cannot digest the main carbohydrate in dairy products (lactose) leading to various symptoms that include bloating, diarrhea and abdominal cramping. Another reason for lactose intolerance symptoms is that people that have the condition stop producing sufficient amounts of the enzyme lactase that the body needs to digest lactose, a blood test for lactose intolerance will check for

Lactose consists of two sugars (disaccharides) split into two molecules each of the simple sugars galactosemia and glucose, when there is insufficient lactase and that causes lactose to move through the gut in undigested form and that’s where the symptoms of lactose intolerance begin. The enzyme lactase is important because it breaks down lactose into glucose and galactose that are then absorbed in the bloodstream and converted into energy.

Lactose dairy

Where is lactose found?

Lactose is produced and found primarily in milk and dairy products like cow’s milk, yoghurt, goat’s milk, ice cream, it is also found in breast milk, lactose can also be used as an ingredient in food and drink such as cereal, bread, salad dressings, mixed for baked goods and lunch meats. Lactose can be digested by nearly everyone in rare cases children under five may have a lactose intolerance.

Lactose intolerance blood test

Believe it or not approximately 75% of the population in the world are lactose intolerant and may not know it, a blood test lactose intolerance is a test panel that utilizes a blood sample to check whether you have an intolerance to lactose, 4 one millimeter samples are taken at different intervals following a period of fasting usually 8 hours.

Following this process the patient being tested is given a 50 gram lactose dose and further blood samples are taken at regular intervals total time from start to finish is 4 hours approximately, the blood test for lactose intolerance results are available online within 2-3 days, to find out more on the blood test for glucose intolerance go to the Health Labs website here.

What causes lactose intolerance?

To understand the causes of lactose intolerance its important to point out that there are two types and the cause are different in each type, the most common type is primary lactose intolerance and is caused by a reduction in lactase production mostly caused by aging, the decrease in lactase production means that lactose is poorly absorbed, other reasons could be genetic.

The second type of lactose intolerance is known as secondary lactose intolerance this is caused by illness like a stomach bug or more serious celiac disease, the cause is gut inflammation leading to a temporary reduction in lactase production, if the condition isn’t managed in the right way it can lead to some severe problems in the digestive system that include:

  • Abdominal cramps
  • Bloating
  • Diarrhea
  • Gas

People with the condition have also complained of an urgent need to get to a toilet, vomiting, nausea, lower belly pain and kn occasion constipation, undigested lactose in the small intestines causes diarrhea leading to making water move into the digestive tract. When the lactose reaches the colon it is fermented by gut bacteria forming gas and short chain fatty acids leading to pain, bloating and flatulence, how severe the symptoms are will depend on your lactose tolerance and the amount of food that you have eaten.

Blood test lactose intolerance

Health blood test lactose intolerance

Health Labs blood test lactose intolerance is a very in-depth check on your levels of lactose intolerance that requires you to fast for eight hours prior to the test, a blood sample is taken at a location near you by a healthcare professional, a 50 mg of lactose is administered in a water solution, the laboratory technician will collect more blood samples every 30 minutes (4 in all) following the lactose dosage. The test results are guaranteed to be in your secure online account within 1-3 days, if you need a detailed explanation of the test results that service is also available at Health for more info go to this page here.

Is there a cure?

Unfortunately, there isn’t a known cure for lactose intolerance, however it can be controlled by changes to your diet, in certain cases for example where gastroenteritis is the cause the symptoms are temporary and should go away in a few days or weeks, however those lactose intolerance cases that are caused by genetics or an underlying condition are likely to last for a long time, so what can you do?

Change your diet

In the majority of cases by reducing or cutting out food and drink that contains lactose and changing to a lactose free alternative should be sufficient to control the symptoms, however this will depend on your sensitivity to lactose, some can tolerate it without any issues but others will get symptoms even with a small amount of lactose in what they consume.

The best advice on how to change your diet to reduce your lactose intolerance is to gradually introduce new alternative lactose free foods, don’t go gung ho at the start experiment with foods you can eat that don’t cause symptoms take your time and start by eating fewer lactose products.


By changing over to a lactose free diet can have implications for inadequate minerals and vitamins so it’s a good idea to supplement your diet with a good all round multivitamin or you could seek the advice of a qualified dietitian.


I hope that you have all the information that you need on a blood test lactose intolerance, if you suffer from any or all of the symptoms it’s a good idea to go to the Health Labs website to discover where is your nearest draw location that you can avail of the service and find out if you are lactose intolerant or not, a blood test lactose intolerance will put your mind at rest.


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