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Doctor insights on: Fructose Breath Test

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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

Fructose (Definition)

Fructose, or fruit sugar, is a simple monosaccharide found in many plants (fruits, vegetables, sugar cane and honey). Fructose is absorbed directly into the bloodstream during digestion. Since 1970 high fructose corn syrup has been increasingly used in the food industry. Excess fructose consumption has been linked to Insulin resistance, obesity, metabolic ...Read more


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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

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Breath test= positive sibo due to double peak hydrogen counts. Egd = duodenal lymphocytosis. Negative celiac. Should i take xifaxin if only symptoms is gas?

Breath test= positive sibo due to double peak hydrogen counts. Egd = duodenal lymphocytosis. Negative celiac. Should i take xifaxin if only symptoms is gas?

It's Worth a Try: There is very little downside in taking xifaxan, (rifaximin) since it is basically a non-absorbable antibiotic. Duodenal lymphocytosis may be a non-specific finding, and if your only symptom is excessive gas, then trying this relatively safe antibiotic might just work. ...Read more

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What does a fructose breath test result of positive mean?

What does a fructose breath test result of positive mean?

Malabsorption: If a person cannot digest and absorb a sugar such as fructose or lactose, it is fermented by bacteria in the intestine and hydrogen gas is liberated that can be detected in the expired air. A positive test showing hydrogen in breath indicates inability to digest and absorb that sugar, in your case, fructose. ...Read more

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Are a Urea Breath Test & a breath test for SIBO the same thing or not?

Are a Urea Breath Test & a breath test for SIBO the same thing or not?

Not the same thing: A Urea Breath Test looks for infection of the stomach by H. pylori bacteria. The urea test detects specially tagged carbon dioxide that is exhaled by the patient after H. pylori digests urea. A SIBO breath test is the Hydrogen Breath Test, which detects hydrogen and methane produced by unwelcome bacteria in the small intestine when the bacteria digest the test substance (lactulose or glucose). ...Read more

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Erosive gastritis. h.pylori blood test positive, breath test positive, stool antigen test negative, biopsy negative. what to do ?

Erosive gastritis. h.pylori blood test positive, breath test positive, stool antigen test negative, biopsy negative.  what to do ?

Treat it: The positive H. pylori antibody test is not a reliable indicator of current infection. The gold standard for H. pylori treatment is the gastric biopsy, and this is negative in this patient. However, I am impressed by the positive breath test and erosive gastritis. I would have expected stool antigen to be positive, as it mirrors the breath test. Given the discrepant results, treat the patient. ...Read more

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Can LPR reflux cause shortness of breath on mild activity like bathing playing cooking, xray 2decho pft blood test ECG are normal?

Can LPR reflux cause shortness of breath on mild activity like bathing playing cooking, xray 2decho pft blood test ECG are normal?

Perhaps: If the laryngopharyngeal reflux is causing excessive mucus or buildup in the airway such that it is difficult to move air, then perhaps. Alternatively ways this condition could lead to shortness of breath include excessive coughing which interferes with normal air movement, or postnasal drip leading to asthma. ...Read more

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Why is hydrogen breath test performed?

Why is hydrogen breath test performed?

LACTOSE,FRUCTOSE INT: This test is done to diagnose lactose and fructose intolerance small bpwel bacterial overgrowth other sugars malabsorption, like sucrose, mannitol, sorbitro, glucose and lactulose. ...Read more

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Can chronic hyperventilation syndrome cause false positives in hydrogen breath tests?

Can chronic hyperventilation syndrome cause false positives in hydrogen breath tests?

Seems so: So, be sure to advise the providers doing and interpreting the test of this condition. They might do a different test or prevent the hyperventilation in some way or whatever. It would be a good idea to find a way to stop that breathing pattern for many reasons - ask about it. Best! ...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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Breath test with glucose. Positive bacteria overgrowth. Doc want rifaximin. Can this cause c diff? Could i just eat bunch yogurt & probiotic pills?

Breath test with glucose. Positive bacteria overgrowth. Doc want rifaximin. Can this cause c diff? Could i just eat bunch yogurt & probiotic pills?

Rifaximin and CDI: Rifaximin is used as an alternative therapy to treat clostridium difficile infection when other treatments fail. There have been case reports of resistance of c. Difficile to Rifaximin but these are rare. In short should not cause you to get cdi. ...Read more

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Talking triggers bad tachycardia & breathlessness. Basic lung & heart tests normal, blood pressure seems low. What blood tests should I have?

Talking triggers bad tachycardia & breathlessness. Basic lung & heart tests normal, blood pressure seems low. What blood tests should I have?

Holter monitor: This may be supraventricular tachycardia -- this would be my choice. You'll want to know what kind. The electrocardiogram / EKG will show what might be causing it and what you might do to prevent this annoying problem. ...Read more

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Because of negative mannitol test & heavy dysnea, Dr. ordered methacholine challenge, but my dna shows pseudocholinesterase deficiency. Safe test?

Because of negative mannitol test & heavy dysnea, Dr. ordered methacholine challenge, but my dna shows pseudocholinesterase deficiency. Safe test?

Methacholine: Did you have PFTs? First do that ,Rrare to use methacholine in the US as those with asthma can have a severe response. Discuss your deficiency and PFTs wtth your doctor. methacholine is metabolized by acethycholinesterase and si resistent to inactivation by pseuodcholinesterase , so that should not be a factor. See http://www.rxlist.com/provocholine-drug/clinical-pharmacology.htm ...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 fast before urea breath test?

Why fast before urea breath test?

Accuracy of test: This urea breath test is for detecting h.Pylori, a bacterium, that can cause peptic ulcer disease.Helicobacter pylori lives in the stomach and breaks down urea.This natural substance found in normal humans.Capsule is swallowed with urea attached to radiactive label c14. After 15 min. Breath into balloon which is analized to determine presence of bacteria. Food and certain medications interfere. ...Read more