John will request the medical records for Claire Temple and Alfie Solomons after they've sent messages to the Admin indicating that he has attending physician's rights for them. He will explain that he is attempting to ascertain their blood types to facilitate transfusions that may alleviate MN Poisoning symptoms.

If she could even just provide the blood type information and not the full medical transcript, that would be helpful to prevent potential complications from the transfusions for blood types that don't match up.