It was frozen.

Storm couldn't make sense of it. Cirrus had extracted Ray's blood and put a drop on the glass slide. Now the blood was frozen.
"So, what's wrong with me?" Ray tilted her head. Storm shrugged.
"Can't tell. Pass the needle back over? I want a bigger sample."
"Sizist." Cirrus said this and Ray laughed. Storm didn't understand it. Then her brother gasped.
"It's frozen!" He dropped the needle and it shattered. The blood it contained didn't spill or pool, no, it shattered too. The three stated at it before Ray stood up and went through a drawer.
"What are you..." Cirrus began to ask and yelled out as she took a scalpel to her arm. Storm was there the next second, tossing it away as Cirrus went to get help. When he returned he saw the same thing storm did.

Starting at Ray's arm was a frozen bloody icicle.