It’s Bloody Gold

[WP] There’s a blood drive going on in your town and a friend of your has talked you into going with them to donate. Everything goes fine and seems normal until it’s your turn and they start drawing your blood. from WritingPrompts

“This won’t hurt a bit,”
the nurse looked through a file.
“Hold still while I do it,”
she added with a smile.

She pricked the skin
and pushed the plunger in.
She pulled it out and gasped.

“What are you?” she asked!
Bob peeked at the vial she controlled.

“Oh my god!” he said. “My blood is gold!”