"Hmm, no, not right now. I want to see if maintaining objects for long periods of time puts any strain on you."

"Okay. And what do you want me to do?"

"First, turn into a girl."

Done.

"Can you make any further alterations?"

"Like what?"

"Hair colour, skin tone, ethnicity, age, height..."

"I think so." Sadde makes himself taller.

"Can you attempt the other suggestions?"

He changes everything suggested.

"And you believe these physical alterations to be just as real as the marbles?"

"Yeah."

"I'll have to take tissue samples later. In the meantime, I should probably take some blood, try and determine whether the virus is present."

"Okay. Do I need to stay as a girl?"

"Preferably, I'd want to take samples of you in your resting state, and your assumed form."

"Okay."

Another Jeanette enters the room, carrying blood sampling equipment.

He offers his arm.

Sample, sample. 

Casual inspection does not reveal anything weird with the blood. When she tries to study it with a microscope, however, the blood vanishes.

She then tries the blood taken from Sadde's male body.

That sample doesn't disappear under examination.

"Hmm, no infection." Jeanette had sent a couple of her bodies to go examine the male blood. "So you're not faking baseline."

"I'm not. I'm a parahuman, not a Miracle."

"And your female blood samples appear to have been somewhat illusionary."