House heads for Marco the Pharmacist and asks for a huge dose of steroids. Marco doesn't want to give House so much medicine without a note from House's mom -- I mean Cuddy. That's protocol, and Marco's not going to break it with the inspector around. By the way, there's a reason why they put hospital pharmacists behind secure, locked doors. That reason is so that crazy people can't go walking in and take the drugs they want. But Marco doesn't lock his doors, even with the inspector about. So that's exactly what House does while Marco dials Cuddy to tattle.
House is about the administer the steroids to Evan when Cuddy comes in. She informs him that he's about to give his patient an overdose of steroids (as if he doesn't already know this), and that House needs to get the allergy test results back before doing anything. House says they don't have time. Cuddy counters that if she had gone along with House's protocol-avoiding ways earlier in this episode, Evan would have unnecessarily filtered blood and no thyroid. That's a good point, but House doesn't want to hear it. Cuddy says that stakes are high: If this inspection doesn't go well, then she'll be fired. And so will House. House tells her to go outside, wait three minutes to give him time to administer the steroids, and call security. Then she'll be covered if anything goes wrong. House, I'm guessing, won't be so lucky. Cuddy apparently decides to go down with the ship: She just gets all teary and asks House to let her know if Evan dies so she'll have time to pack up her desk. But she doesn't think that will happen really, does she? Or else she would have taken the easy way out or called security before House could administer the drug.