Is there any non-invasive validated testing for Annatto (E-160b), also known as norbixin?
Answer from: at Academic Institution
There is an approved test through ARUP laboratories for annatto/annatto seed. I have used this test when I have had a high index of suspicion and have received positive results that were clinically relevant in the few cases I needed it. I am not aware of data on negative and positive predictive valu...