Hematologist - The idea that the blood is what sparks the talent within many young sorcerers is well known throughout the lands, and some sorcerers take this research to heart, studying the blood of others and pushing the limits of their own. This makes them more privy to the expertise of a physician, for good or ill, while the research is often used to strengthen the sorcerer's own physical form, empowered by what magic courses through their veins.
Level 1: +2 Fortitude Save, Drawn blood can produce magical benefits, Blood Track 5/day player tool (use on PC blood vials)
The subject of the topic and the marked part of the perk is what isn't working.
I've drawn alot of blood from players to reach this conclusion.
Also drawn at least like 50x my own blood (because alchemy-reasons).
Last time I played it, my own blood never gave magical effects. Only the blood of others and that was quite rare. Though if you've taken 20+ blood samples from others and still not gotten single effect attached to the blood, that could be a bug for sure!
I've played a Hematologist before, and I've been able to draw magic out of my own blood. This was in EFUR however..
Even in EFUR I only ever got it to proc on my own blood, though the wording is somewhat ambiguous