If you are unable to confirm that the patient has allergies or not what should do?

Administer an allergy skin test for the most common allergies. Allergy skin tests are generally safe and effective in identifying common allergens.

Use caution when administering medications that the patient may be allergic to. If you suspect that the patient may be allergic to a particular medication, consult with the patient's physician before administering it.

Monitor the patient for any signs of an allergic reaction. If you see any signs of an allergic reaction, such as hives, swelling, difficulty breathing, or dizziness, stop administering the medication and call for medical help.

Document the patient's allergies in the medical record. This will help to ensure that the patient's allergies are not overlooked in the future.