IPA: /ˌɪmjunəˈkɛmɪkəl/
KK: /ɪˌmjunəˈkɛmɪkəl/
Related to the study of the chemical processes and substances involved in the immune system.
The immunochemical analysis revealed important information about the patient's immune response.
Immunochemical → It is formed from "immunis" (from Latin, meaning exempt or free from) and "chemical" (from Greek "khemia", meaning the art of transmuting metals). The word refers to the chemical processes related to the immune system, emphasizing the relationship between immunity and chemical reactions.
Think of being 'exempt' ('immunis') from disease due to 'chemical' processes in the body — that's what immunochemical means.