How Long Does it Take to Notice Benefit Following your Finger Prick Food Intolerance Test? (York Test)

Source: ‘Dietary advice based on food-specific IgG results’, Geoffrey Hardman Centre for Health Economics, University of York, Heslington, York, UK and Gillian Hart YorkTest Laboratories Ltd, York Science Park, York, UK.

In a survey of 5286 subjects who had taken a food-specific IgG ELISA (enzyme-linked immunosorbant assay blood test), 4,069 subjects (77%) replied to a question which asked “How long after altering your diet did you start to feel the benefits?”

The results were as follows:

Time Taken to Feel Benefit after YorkTest Food Intolerance Test

Only 2.1% noticed no benefit. 70.1% had noticed benefit by 20 days after altering their diet based on this test.

Better results were obtained by those who rigorously followed the diet. And those that improve the most are more likely to improve quickly as there is a clear relationship between the overall amount of benefit and the speed with which it is felt.