You arrive at the lab the next morning. You're a bit bothered by the significance of the street number, 1313, but being a rational type you disregard it as a hold over of childish superstitions.
The building itself doesn't look that odd, just your typical office building. You enter the lobby and tell the pretty blonde receptionist at the desk you're here in reply to the ad. She smiles at you as you show her the ad. She leads you down the hallway to a small room. It looks like an average doctor's examining room. The receptionist tells you to take a seat on the examing table and the doctor will be by shortly.
You start to ask her just what kind of testing is going on but before you can get the question out she's already left the room. Shrugging you sit down on the table, wondering if you'll have to wait as long as you do when you visit your regular doctor.
Not anywhere nearly as long, it turns out. A minute later the doctor enters. He's middle aged, a little hefty, his brown hair turning grey at the temples. He enters the room, pushing a cart filled with small vials of different colored liquids. "Ah, this is most wonderful," he says, his voice friendly and obviously pleased that you've arrived to take part in his study.
He gives you a quick examination, checking just your heart rate and blood pressure. "Very good," he says as he takes the stethescope off your chest. "You're in excellent health." You're surprised at the rather quick examination, but if the doc is satisfied you're not going to argue with him.
"Now then, young man, are you ready to test one of my formulas," he says, waving a hand toward the cart filled with all the vials.
"Formulas? What kind of formulas?" you ask, not at all so sure you want to take part in this test after all.
"Oh, wonderful formulas," the doctor says, "And they've proven quite successful, why just yesterday..." Before the doctor can finish the door to the examining room opens and in steps...