Response category (RC)-based triage of patients (at risk for the Acute Radiation Syndrome) to appropriate medical facilities: Initially the patient is triaged based on the highest RC subsyndrome severity score (1,2,3 or 4) for any one of the four cutaneous, gastrointestinal, and neurovascular subsyndromes of the Acute Radiation Syndrome. This separates patients into those triaged to ambulatory facilities versus those triaged to hospitals. Generally, RC 1 patients are triaged to ambulatory facillities and RC 3 or 4 patients are hospitalized. RC 2 patients can be triaged to either, depending on their specific circumstances. Patients who are hospitalized are triaged again within the hospital by their hematopoietic subsyndrome RC score of 2 or 3 or 4. Within the hospital, RC 4 patients go to critical care, and RC 2 patients go to routine care. RC 3 patients can go to either depending on their specific circumstances.