Right, which is why i included the question point. It is a decent way to test spirits you are unfamiliar with.
OP, I would recommend doing a series of evocations to explore this if it is something that interests you. I would take a look at the Seal of Manifestation here on the forum as well as @anon97554939’s servitor for protection from parasites. If they still show up, use the question technique with five questions for each evocation. Be sure to have one or two of the same questions to observe any changes. Record every question and answer to examine afterwards to notice any trends/contradictions. Ten evocations should provide enough information