The 30 Food Additives, Colorings, & Preservatives Panel - Add-On Only - ALCAT Test Kit identifies potential sensitivities or intolerances to a selection of 30 common food additives, colorings, and preservatives. Note: This is a pre-paid shipping test kit that will be mailed and it requires a blood draw. Please contact your local hospital, clinic or phlebotomy service for lab specimen collection.