It is not possible to determine sensitivity to leek based on sensitivity to onion. This is because onion (Allium cepa) and leeks (Allium porrum) are two completely different foods. Therefore, the only way to know sensitivity to leek is to measure sensitivity to leek.
Good news! Onion is included on Vibrant's Food Sensitivity Profile 1 and leek is included on Vibrant's Food Sensitivity Profile 2. Therefore, both onion and leek are included on Vibrant's Food Sensitivity Complete.
