DNA tests can obviously be of a sensitive nature and we are more than aware of this. All our DNA sampling kits are sent out in the post in plain envelopes marked Private & Confidential and with no branding on them, so it will look like a normal letter.
Shellfish Allergy Triggers. Within the shellfish family, it is the crustacean group (shrimp, lobster and crab) that causes the greatest number of allergic reactions. Many shellfish-allergic people can tolerate mollusks (scallops, oysters, clams and mussels). Avoid foods that trigger symptoms.
1 Iodine solution, often before surgical procedures to clean the skin) compared to non-shellfish allergic people.  While allergies to radiological dyes do exist, the risk of a reaction in patients with a shellfish allergy is no greater than. someone who is not shellfish allergic.