This is a part of our homework and our Anatomy book does not help me clarify this question. I think it's probably an infection maybe tetanas ?

This is a part of our homework and our Anatomy book does not help me clarify this question. I think it's probably an infection maybe tetanas ? so what would they test The Calcium level and is the incision important because it's the source ? and Why is a possible organ removal also causing this?

(A patient shows up in the emergency room with carpopedal spasm's in the hands and feet and a partially healed surgery incision in her neck region. A. As a doctor which ion do you order measured via a blood test? Which hormone do you order measured via a blood test? )