Food allergy collection message quick answer.
Dr. Wu Yu popularized science.
Some people say that after drinking lactose-free depth for four months, the urine test is still positive today. This problem actually said that the principle of diagnosing lactose intolerance by urine is to detect the galactose content in the urine. If galactose can be detected, it means that lactase is not deficient, and it can digest lactose into galactose, and then enter the bloodstream and excrete part of it in the urine.
If lactose is not deficient, the lactose ingested cannot be digested into galactose, galactose cannot be detected in the urine, and the report will show lactose intolerance. It can be seen that the premise of this test is that lactose must be ingested to be meaningful. Without lactose intake, even if there is more lactase, no galactose will enter the bloodstream, galactose can not be naturally detected in the urine, and the report will definitely show lactose intolerance.
Therefore, infants who eat lactose-free deep hydrolyzed milk powder or amino acid milk powder, direct detection of urinary galactose must show lactose intolerance, and does not indicate whether the infant's intestinal lactase is really deficient. Some people say that the baby does not have any allergies, but does it need to change to deep hydrolyzed milk powder when milk allergy is detected? That's a joke. Without allergic manifestations, there is no need to test for allergens, and there is no problem of changing milk powder.
In addition, the test item is IgE antibody or IgG antibody, if it is IgG antibody, it is also called food intolerance test. The program is currently of little significance to babies and can neither be used to diagnose food allergies nor food intolerances. If it is positive for IgE antibodies, it can only represent sensitization, and if there are no symptoms, it is not an allergy and does not require intervention.
Lactose intolerant babies switch from lactose-free formula to regular formula. Some people suggest that it is to transfer milk by meal, but I generally recommend adding a part of ordinary milk powder to each meal, and if there is no lactose intolerance such as diarrhea, increase the amount every day until you find the upper limit of ordinary milk powder that the baby can tolerate, maintain this amount, and generally try to increase the amount after a month.
