Test Tube scribbles down another equation into her notebook, staring at it for a moment in thought and tapping her pen against the paper. She's currently in her lab, just jotting down equations for her next experiment.

She hears a loud 'THUD' noise, indicating somebody has entered the lab, and she glances over to the person briefly.

"Hey there!" She smiles at the person before looking back down at her notes.