HP, Fourth Year, Slander, Libel, Rita – nuff said, Pansy being quoted

However, it might not be Miss Granger’s doubtful natural charms that have captured these unfortunate boys’ interest.
“She’s really ugly,” says Pansy Parkinson, a pretty and vivacious fourth-year student, “but she’d be well up to making a Love Potion, she’s quite brainy. I think that’s how she’s doing it.” Rowling, J.K. Harry Potter and the Goblet of Fire (p. 206). Pottermore Publishing. Kindle Edition.

Hermione may not be taking it seriously, but Harry was. And walked out of the class to the shouting of Snape. And straight up to the infirmary. Not even stopping at the useless Pomphrey, he just grabbed the emergency powder and flooed to St Mungo’s and slammed the paper on the Welcome Witch’s counter. His wand up her nose. Demanding an exam to show there were no potions in his system.

There were potions in his system though, just not love ones. And the potions were Mastery level and not student as there was Alchemy parts involved with them.
So, even with no Love Potions in his system, he still needed Purging Potions. And since their systems now documented he was emancipated, he demanded that everything was documented, and a law barrister be brought in from the ICW and not from the UK for he had a list, and it was long. And right now, the Parkinson’s were right at the top of it, tied with Rita Skeeter.