Of course Harry hadn't got any thanks, but after talking the matter over a bit more rationally, Vernon had glumly agreed that marrow donation might be Petunia's best hope. Sure enough, he'd admitted to being leery because of "freak side effects," as he put it, but Snape had smoothly allayed all his fears, telling him that such a thing was most definitely not possible.
Very Slytherin of him, Harry had thought at the time, since he knew full well that Snape believed the transfer of marrow to Petunia might indeed render her magical. He told Harry later that in all likelihood, any such change in the woman would be gradual. In the meantime, the wards would be extended to Dudley so that even if Petunia relapsed, Number Four Privet Drive would continue to be a haven. Actually, Snape had sneered that last word.
Harry was thankful that he'd left it at that. Just a sneer to show what he really thought of the Dursleys. Snape didn't do what Hermione would have if she'd found out the truth; he didn't try to get him to open up and talk about his feelings. He just let Harry be Harry.
Convincing Vernon had taken about an hour, an hour during which Dudley had been nowhere around. Harry had wondered about that; he'd rather wanted to test out the waters a bit, and see if his cousin was still in a friendly mood. It might be important for the wards, but Harry didn't get a chance to see Dudley.
Directly after Vernon had agreed to let Harry be tested for compatibility, and told a nurse so, Harry was whisked away for a series of tests that made the O.W.L.s seem like a picnic. Physical tests, most of which he'd never heard of before, though the nurses guiding him through it were perfectly willing to explain things as they went.
It all started with a questionnaire he could hardly read for the unfamiliar words, and then a lengthy interview designed to ferret out even more information. Personal information. Question after question about his parents; questions he couldn't answer. How many times did he have to explain he'd been orphaned at the age of one and had never been told anything much about his mum or dad?
Then came the questions about him. Harry didn't know what to say to half the things they asked. Did he drink, even on occasion? Well, sure, I'm not averse to a butterbeer or two . . . What medications had he taken in the past year? Calming draught, Pepper-Up Potion, way too much Dreamless Sleep . . . Had he used any recreational drugs in the past three months? I don't know. Can what the twins produce rightly be called drugs? They're definitely recreational . . .
Unable to answer with anything remotely approaching truthfulness, Harry had basically ummed and errrred and mumbled his way through the whole process, while Snape sat there smirking, no doubt thinking unhelpful thoughts about Slytherins and cunning. Harry was irritated by the smirk, but truth to tell, he was glad that Uncle Vernon had loudly insisted that Professor Remus Lupin was his representative who was to accompany Harry through the entire testing process. That was Snape's idea, no doubt spelled onto an unsuspecting Muggle, but the medical staff accepted it since it did come from Harry's legal guardian. It might not be comfortable with Snape in the room, but the dark shadows on Privet Drive that morning had been warning enough; Harry knew he needed to stick close to the one who could Apparate him to safety.
Still, he found it increasingly uncomfortable to be put through these medical paces with Snape looking out on it through Remus' kind brown eyes.
The medical interview was bad enough, but at least they let him keep his clothes on for that part. Shortly afterwards, things got faintly ridiculous, as far as Harry was concerned. Why did they need all this stuff from him? Just take his marrow and be done with it! But no, they had to have his blood and tissue typed. Actually, those necessities he understood, once they explained the phenomenon of rejection, which scared him silly. He didn't want to be responsible for Petunia's death.
But why did they need to x-ray his chest, let alone attach him for an hour to a machine that recorded his heartbeat? He'd had to take off Dudley's stained, oversized sweatshirt for that part. Then they drew blood again, explaining that he'd have to be tested for what seemed like a whole alphabet of problems. And then more blood for what they called DNA analysis, which would be the final watchword on whether his marrow was suited to be introduced into Petunia's.
Harry was starting to wonder if they were planning to leave him any blood. He winced every time a needle came near, and clenched his eyes, and told himself, You've had a basilisk fang embedded in your flesh. Surely you can withstand a thin little needle.
Somehow, though, the needle was more frightening, probably because he had to sit there and just take it. At least he'd got to fight the Basilisk. Harry actually had to restrain himself from using magic to make that needle go away. He was just itching to, especially on the last draw, when the nurse was having trouble finding a vein. Over and over she slid the horrid thing in, while Harry scrunched up his eyes and shook from head to toe, his arm holding still only because the nurse's grip was surprisingly firm.
Up until then, Snape hadn't done much but watch, but for that last draw he went to stand by him. Not touching, not speaking, not even casting a wordless spell to calm him. He just stood there, reminding Harry that he wasn't alone.
And it had helped.
As soon as the nurse was loading vials of his blood into a tray, Snape had returned to his chair.
Harry had thought the ordeal was over, then. They'd bled him nearly dry --well, seemed like it to him-- so what else was there?
He should have known it was only going to get worse. Because then, they had to ask him for urine. At first he'd just stared, shocked speechless that a pretty redheaded nurse's assistant no older than eighteen was handing him a small plastic cup and telling him to go into the adjoining bathroom and urinate on demand, then hand it back to her, filled. He didn't think he'd ever been so humiliated, and there sat Snape, listening to every word.
His professor evidently thought he was over-reacting, though. "It's not so different from what you'd have to do to brew some of the more advanced potions," he nonchalantly offered, leaning back in his chair, legs languidly extended as he closed his eyes.
Decorum again, Harry sensed. Snape had quite a lot more of it than he'd ever let on. Harry did as he'd been requested, blushing as he handed the sample back to the pretty nurse's helper.
Only to find out that after all that, he had to wait for all those tests to be performed and evaluated.
They'd explained and said a quick good-bye to Uncle Vernon --still no Dudley in sight, Harry noticed-- asking him to use Mrs Figg's owl again as soon as he had word of the results. Vernon had scowled, but agreed.
And then, after a long day of discussion, and decision, and Muggle medical idiocy, Harry had finally flooed back through to Hogwarts, Snape in his wake. The headmaster's office was deserted when they arrived.
"Dinner hour," Snape explained, and Harry groaned. No way could he eat, not after all that.
Snape seemed to understand what he was thinking. "It's only going to get worse, Potter," he quietly pointed out. "What they did to you today wasn't much compared to the extraction procedure itself."
"I know, I read the book!" Harry snapped, not wanting to think about it.
"It's not too late to change your mind."
Harry stared up, trying hard to see Snape somewhere inside Remus' features. It wasn't easy.
"It is too late," he argued. "I already said I'd do it."
Snape shook his head, a single, disdainful word lancing the air: "Gryffindor." Then he was striding from the room to return to his dungeons.