Patients with li may also expire increased amounts of. Webthe hydrogen breath test (h 2 bt) is the most widely used procedure in the diagnostic workup of lactose malabsorption and lactose intolerance. To establish whether a. Webthe lactose hydrogen breath test is used to determine if the patient has lactose intolerance. The most common problems studied with the lactose test are: Webraised hydrogen breath levels indicate the improper digestion of lactose, which could lead to a diagnosis of lactose intolerance or the presence of abnormal. Patients with li may also expire increased amounts of. Webresults were analysed to determine the number of patients who met the diagnostic criteria for lactose intolerance (>20ppm rise in hydrogen above baseline) and of this group,.
