CLT exam prep — worth certifying if you already do MRT protocols in practice?

I'm a registered dietitian with 4 years of clinical experience and I've been doing mediator release testing with clients for 2 years without the official CLT credential. My practice is growing and I want the formal certification, but I'm trying to figure out what the exam covers that I might actually be missing.

From talking to other CLTs, the exam has around 150 questions covering food immunology, inflammation pathways, gut-immune connections, and LEAP dietary protocol specifics. I've seen people say they passed with 2–3 weeks of prep, but also people who failed assuming clinical background was enough without reviewing MRT methodology details specifically.

Has anyone sat for it recently? I'm particularly wondering whether it's more conceptual biochemistry (explain leukocyte activation) or clinical application (given this MRT result, what's the Phase 1 food list). That distinction matters a lot for how I'd structure my review.