In io tests can lead to an anaphylactic reaction, and therefore should be only administered by a trained allergist in the presence of resuscitation equipment.
The high molecular weight impurities in cephalosporins are the sensibilisinogen causing tacho-anaphylactic reaction and the emphasis in pharmaceutical analytical studies.
Two health care workers in the United Kingdom who got it and who had a history of allergic reactions both had a dangerous allergic response to Pfizer's COVID vaccine.
I can imagine going into a restaurant with a friend that has a peanut allergy, taking out my phone, waving it over the food and having the food tell us a really important answer to a question—deadly or safe to consume?