Publication:Dread Codex 2/New Spells/Blood Will Tell

With this spell, the caster is able to taste different things in the blood of his chosen target. This can be diseases, poisons, and even what race the creature is. There is no danger to the caster; he cannot be affected by the blood in any way, no matter how potent the poison or dangerous the disease.

By making a successful Heal skill check (DC 15), the caster will know what is wrong and what to do about it, if there is a cure to the disease or an antidote to the poison etc. If it is something rare and extremely dangerous, then the caster might know what is wrong, but have no idea what to do about it, by making a successful Heal skill check (DC 25), the caster will know what to do about the poison or the disease. This is not a healing spell, merely a diagnostic spell, but it might show a disease that is not obvious on the person or a poison that the target did not know he was affected by.

Arcane Focus: Blood of a human.