Lactose Intolerance Test

The Lactose Intolerance Test is a functional assessment used to evaluate how the body digests lactose, the natural sugar found in milk and dairy products.

Lactose digestion depends on the presence of the enzyme lactase, which breaks lactose down into simpler sugars that can be absorbed in the small intestine. When lactase activity is reduced, lactose may not be properly digested and can remain in the digestive tract.

Testing is used to help identify how the body responds to lactose intake and whether lactose digestion is functioning as expected.

What The Test Evaluates

The Lactose Intolerance Test assesses:

• The body’s ability to digest lactose from dairy products
  
• Lactase enzyme activity and lactose breakdown
  
• Hydrogen production after lactose consumption (in breath-based testing methods)
  
• Digestive response following lactose ingestion

How The Test Works

The test is typically carried out using one of the following approaches:

• A lactose challenge where a measured amount of lactose is consumed
  
• Monitoring of the body’s response over a set period after intake
  
• Breath testing that measures hydrogen levels after lactose consumption

These methods are used to observe how effectively lactose is digested and absorbed.

Who This Test Is For

This test is used for individuals experiencing symptoms after consuming dairy products, such as:

• Bloating or abdominal discomfort
  
• Diarrhoea or loose stools
  
• Nausea or digestive upset after dairy intake
  
• Suspected difficulty digesting milk or lactose-containing foods
  
• Ongoing digestive symptoms linked to dairy consumption

What The Service Includes

• Lactose intolerance testing using a breath test
  
• Controlled lactose intake as part of the testing process
  
• Measurement of digestive response markers after lactose consumption
  
• Laboratory analysis of results
  
• Assessment report on lactose digestion capacity

Preparation Guidelines

Preparation typically involves following pre-test dietary instructions and fasting requirements as advised before testing to ensure accurate results.

Disclaimer: These services do not fall under the Singapore Health Services Act. Dr. Menka Gupta holds an MBBS degree and practices functional medicine. Please consult your primary care provider for medical advice, diagnosis, or treatment. Information provided is not a substitute for medical advice.

The Lactose Intolerance Test is a functional assessment used to evaluate how the body processes lactose and how it responds to lactose ingestion through breath or blood-based measurements.

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