Table 1 Criteria of positivity for oral food challenge according to Powell [[6]]
From: Food protein induced enterocolitis syndrome caused by rice beverage
Preparatory steps | Observe/test for criteria* |
|---|---|
Emergency therapies in place (i.e. intravenous access) | Vomiting, diarrhoea |
Verify normal weight gain and lack of symptoms while avoiding potential causal protein | Faecal blood (frank or occult) |
Baseline and follow-up stool samples | Faecal leucocytes |
Baseline peripheral blood PNM count | Faecal eosinophils |
Repeat peripheral blood PNM count 6 h after ingestion | Increase of neutrophils >3.500/mm3 |