1. Use of pulmonary hydrogen (H2) measurement to quantitate carbohydrate absorption;Bond, Jr, J.H.; Levitt, M.D.;Journal of Clinical Investigation,1972
2. found none among 25 lactase deficient subjects given 50 g lactose. All the above studies were performed in the USA and the United Kingdom. The differences between their results and ours may small bowel transit time in man utilizing pulmonary hydrogen (H2) measurements;Bond, Jr, J.H.; Levitt, M.D.;Investigation of et al,1975
3. Determination of be due to geographical variations in the composition of the prevalent colonic flora, possibly in relation to different dietary habits, or other factors may be involved. In any case, henceforth, it will not be lactose malabsorption by breath analysis with gas chromatography;Gearhart, H.L.; Bose, D.P.; Smith, C.A.; Morrison, R.D.; Welsh, J.D.; Smalley, T.K.;Analytical Chemistry,1976
4. Production and excretion of hydrogen gas in man;Levitt, M.D.;New England Journal ofMedicine,1969
5. Use of respirapossible to exclude carbohydrate malabsorption on the basis of a flat H2 breath test without concurrent evidence that H2 is produced after a lactulose load, at least in our population. Even this would be valid tory hydrogen (H2) excretion to detect carbohydrate malabsorption;Levitt, M.D.; Donaldson, R.M.;Journal ofLaboratory and Clinical Medicine,1970