How severe is an allergy with the values of 0.22 ku/l for crab and 0.15 ku/l for shrimp? i have never had a reaction,just discovered in allergy panel

History is more: Important than blood tests in asserting whether you're allergic to a certain food, also skin prick testing is more sensitive and specific than blood allergy panel, but history of positive symptoms or an allergic reaction to a certain food remains to be the important parameter, talk to your doctor or your allergist,

Negative: These appear to be negative values. However if you have had a serious reaction suspected to be from either of these foods, you need to talk to your allergist before ever touching these foods. If the tests are done for general purpose when you have never had any reaction from eating them then there is no reason to avoid these foods.