What should the EMT do after finding a postictal patient with a blood glucose level of 48 mg/dL?

In this situation, the patient postictal (following a seizure) and has a blood glucose level of 48 mg/dL indicates hypoglycemia, which can be serious. The first priority for an EMT in this case is to ensure that the patient receives appropriate treatment quickly.

Contacting Advanced Life Support (ALS) is an appropriate action because the patient's low glucose level suggests that they may require further evaluation and potential intravenous glucose administration, which is outside the scope of practice for basic EMTs. ALS can provide advanced interventions that may be necessary, especially if the patient also exhibits additional complications or altered mental status.

It's important to understand that while administering oral glucose is a direct approach to treat hypoglycemia, this is typically reserved for conscious patients who can swallow safely. Given that the question does not specify the patient's consciousness level or ability to cooperate, the safest course of action is to alert ALS, as they can provide more comprehensive care, including monitoring and management of the patient's overall condition.