Where can I get a CTX test?

Excuse me, I'm interested in the CTX test, and I'm wondering where I can access it. I've heard it's a crucial step in the crypto-financial landscape, and I'm eager to understand more about it. Could you please elaborate on the availability of this test? Are there any specific institutions or platforms that offer it? Is it widely accessible, or do I need to meet certain criteria? I'm also curious about the process of taking the test and what kind of preparation I should have. Your insights would be greatly appreciated.