How to Administer Allergy Shots: Safety Protocols, Monitoring & Documentation

AAAAI practice parameters specify that the following emergency equipment must be immediately available in any setting where allergen immunotherapy is administered: aqueous epinephrine at 1:1000 concentration in pre-filled syringes or auto-injectors; supplemental oxygen with delivery mask; large-bore IV catheters and normal saline; injectable diphenhydramine for antihistamine effect; injectable corticosteroids (methylprednisolone or hydrocortisone); a beta-agonist inhaler for bronchospasm management; a sphygmomanometer and stethoscope; and a tourniquet. This equipment must be in the injection area itself — not stored down the hall or behind a locked cabinet. Epinephrine should be inspected at regular intervals (weekly or monthly) for expiration dates and solution clarity.

A standardized pre-injection screening should confirm: (1) How has the patient felt since the last injection — any new or worsening symptoms, including potential delayed reactions? (2) For asthmatic patients: current peak flow reading — if FEV1 is below 70% predicted or the patient is wheezing, withhold the injection and reschedule. (3) When was the last injection? Doses missed beyond 4 weeks during build-up require dose reduction. (4) Any new medications, especially beta-blockers, which reduce the effectiveness of epinephrine treatment in anaphylaxis? (5) Is the patient febrile or significantly ill? Active infection warrants rescheduling. The screening takes approximately 2-3 minutes and should be completed and documented before the extract is drawn.

Allergen extracts must be refrigerated at 2-8 degrees Celsius and protected from light. Glycerinated extracts (the most common preparation used in US allergy practices) are more stable than aqueous extracts and have a longer shelf life under proper refrigeration — typically 12-18 months from preparation for dilute vials and up to 36 months for maintenance concentrations. Extracts should never be frozen — freezing damages protein allergen structure and reduces immunological potency. Each vial must be labeled with the patient's full name, allergen contents, concentration, preparation date, and expiration date. Temperature logs should be maintained for the extract refrigerator to document that the cold chain has been consistently maintained, particularly after refrigerator malfunctions or power outages.

When a patient returns after missing one or more injection appointments, dose adjustment is determined by the elapsed time. During the build-up phase, if more than 4 weeks (approximately 28 days) have elapsed since the last injection, the dose should be reduced — typically to the last well-tolerated dose or one step below it. The allergist's practice should have a written missed-dose adjustment protocol that nursing staff follow consistently. If more than 8 weeks have elapsed, the allergist should be consulted directly before administering any dose, as a more significant reduction may be needed. In maintenance, the tolerance window is wider — many patients can safely resume their maintenance dose after 6-8 weeks without a missed dose, but this should be confirmed with the supervising allergist.

All adverse events during or after allergy shots should be documented in the patient's medical record using the WAO systemic reaction grading system (Grade 1-4). The record entry should include: the time the reaction began, the specific symptoms observed, the WAO grade assigned, the response interventions taken and their timing, the patient's status at discharge, and the allergist's instructions regarding dose adjustment for future visits. For Grade 3-4 reactions involving epinephrine administration, the documentation should also capture vital signs before and after treatment, the epinephrine dose and route, and whether EMS was called. Adverse events should also be reported through your practice's internal quality management system and may qualify for reporting to the AAAAI/ACAAI immunotherapy surveillance database.

AAAAI safety recommendations call for annual verification of staff competency in anaphylaxis recognition and emergency epinephrine administration for all personnel who administer or oversee allergen immunotherapy. This verification should include supervised demonstration of anaphylaxis recognition using a mock-reaction scenario and correct epinephrine administration technique (IM to the lateral thigh). Annual mock anaphylaxis drills for the full injection-room team are recommended as a best practice — running a drill as a team is more effective than individual competency checks because it tests the communication and coordination elements of emergency response. New staff members should complete a supervised training period of approximately 10-20 observed injection sessions before administering independently.