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Doctor insights on: Breath Hydrogen Test For Lactose Intolerance

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What is hydrogen breath test for lactose intolerance?

What is hydrogen breath test for lactose intolerance?

See below.: The patient is given lactose after an overnight fast, after which exhaled air samples are collected before and at 30-minute intervals for 3 hours to assess hydrogen gas concentrations. If the concentration increases a lot, it proves the diagnosis. ...Read more

Lactose (Definition)

Found in milk. Lactose is a large sugar molecule that is made up of two smaller sugar molecules, glucose and galactose. In order for lactose to be absorbed from the intestine and into the body, it must first be split into glucose and galactose. The glucose and galactose are then absorbed by the cells lining the small intestine. The enzyme that splits lactose into glucose ...Read more


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Why hydrogen breath test positive for lactose intolerance?

Why hydrogen breath test positive for lactose intolerance?

See below.: The patient is given lactose after an overnight fast, after which exhaled air samples are collected before and at 30-minute intervals for 3 hours to assess hydrogen gas concentrations. If the concentration increases a lot, it proves the diagnosis. ...Read more

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Does hydrogen lactose breath test work forn any thing other than telling you if u r lactose intolerant?

Does hydrogen lactose breath test work forn any thing other than telling you if u r lactose intolerant?

Hydrogen breath test: Although most commonly used to diagnose abnormal breakdown of dietary sugars such as lactose, the hydrogen breath test can also be used to help diagnose small bowel bacterial overgrowth and abnormally fast passage of small bowel contents through the intestines. If you have any of these problems, this test can aid in the diagnosis. Good luck. ...Read more

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If u have mild milk allergy with prick test negative . The lactose intolerance breath test will be negative or positive ? Please reply thx ...

Two problems: The skin prick test looks for ige antibodies to a potential allergen. A negative test means allergy is much less likely, but skin tests can miss allergy. Lactose intolerance is not an allergy, so skin testing would not be helpful in a suspected case. The hydrogen breath test can be used to confirm lactose intolerance. ...Read more

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Today my lactose intolerance breath test of 5 hours result is positive but two years back with my blood test report was positive with food allergy ?

2 different things: Lactose intolerance is due to inability or decreased ability to digest milk sugar also called lactose. Allergy tests to milk indicate the presence or absence of ige to milk protein. In other words, allergy tests show if you have an allergy or sensitivity to milk protein and have nothing to do with lactose or milk sugar. You can be lactose intolerant and allergic to milk at the same time. ...Read more

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I think i'm lactose intolerant ihad a breath test but it was fine idon't eat much dairy so ithink that y it's hard to detect.How else can prove it?

I think i'm lactose intolerant ihad a breath test but it was fine idon't eat much dairy so ithink that y it's hard to detect.How else can prove it?

Foood challenge: Another way to prove sensitivity, allergy, or intolerance to a food would be to avoid all meals with the concerning food for 6 to 8 weeks. Then resume eating the food. Obvious return of your symptoms may be regarded as ostensibly conclusive. ...Read more

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Are hydrogen breath tests (to test for lactose, fructose, and lactulose intolerances) very accurate? How accurate are they (generally speaking)?

Are hydrogen breath tests (to test for lactose, fructose, and lactulose intolerances) very accurate? How accurate are they (generally speaking)?

THERE ARE LIMITATION: There are limitations to hydrogen bresth testing for bacterial overgrowth of the small bowel with lactulose can diagnose 60%of cases, this is because strict criteria are used to interpret the test, if less strict criteria are used many more overgrowth will be diagnosed.Some do not have bacteria that produce hydrogen and it can not be tested and some have slow transist through small bowel and takes5h. ...Read more

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Why has my friend's breath been smelling like pepperoni randomly? Not after a specific thing like workouts. He is lactose intolerant and overweight.

Why has my friend's breath been smelling like pepperoni randomly?  Not after a specific thing like workouts. He is lactose intolerant and overweight.

Halitosis: (smelly breath) is a fairly complex subject. Lactose intolerance is often given as a diagnosis when the real answer is the milk itself and it might be a related factor. The overweight implies that a faulty diet is the cause. ...Read more

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I tested positive on hydrogen breath tests for lactose, fructose, and lactulose. What additional tests should I request? I still feel sick.

DON'T: You do not request tests, you discuss with your doctor or doctors and together come up with a plan. If not satisfied change doctors. Just a tip when you go to a doctor and ask for a test to be done some doctors get a little put off. Believe me it is not just me. I would send you on your way- immediately. Lactulose is a medication. ...Read more

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Dr. Bhavin Patel
388 doctors shared insights

Lactose Intolerance (Definition)

Lactose is a type of sugar found in milk and other dairy products. Lactose intolerance develops when the small intestine does not make enough of an enzyme called lactase. The body needs this enzyme to digest lactose. This is not a milk allergy, but instead an intolerance with gastrointestinal symptoms of crampy abdominal pain, gassiness and diarrhea worse with increasing ...Read more


Dr. Bhavin Patel
224 doctors shared insights

Milk Intolerance (Definition)

Milk intolerance (lactose intolerance), is a condition where a person's body does not produce enough of the enzyme lactase, which works to digest the milk sugars. Without this enzyme, the milk sugar goes undigested, which can cause ...Read more