The Emergency Medical Dispatch (EMD) certification exam tests your ability to receive emergency calls, rapidly classify the chief complaint, assign the correct determinant code, and deliver Pre-Arrival Instructions before units arrive on scene. Earning your emd certification through the International Academies of Emergency Dispatch (IAED) demonstrates that you can operate within the Priority Dispatch System and keep callers calm during the most critical moments of their lives. This page gives you a free, printable PDF so you can reinforce card-set protocols offline, during a shift break, or wherever a screen is not available. Practice with the free Emergency Medical Dispatch practice test on PracticeTestGeeks (250+ questions with answer explanations).
Download the PDF below, print it, and work through every question set. The questions mirror the structure of the real IAED written exam — scenario-based items that require you to select the correct Chief Complaint protocol, choose the right determinant level, and identify the appropriate Pre-Arrival Instruction script. Pair the PDF with the full emd certification practice bank on this site to cover both multiple-choice recall and applied reasoning before your test date.
Facts verified Oct 18, 2026 against International Academies of Emergency Dispatch. Dates that have passed are removed automatically.
| Item | Detail | Official source |
|---|---|---|
| Number of questions | 50-question certification exam | International Academies of Emergency Dispatch |
| Passing score | 80% minimum | International Academies of Emergency Dispatch |
| Exam fee | Certification fee and testing included in EMD course registration | International Academies of Emergency Dispatch |
| Retake fee | $30 per online retest | International Academies of Emergency Dispatch |
| Retake policy | Retests available if under 80% (fees apply) | International Academies of Emergency Dispatch |
| Validity | 2 years, ending on the last day of the month | International Academies of Emergency Dispatch |
| Delivery | Exam taken at the end of the 3-day course; recertification exam online preferred, open-Protocol, closed book | International Academies of Emergency Dispatch |
| Eligibility | 3-day IAED-approved EMD course, high school/GED reading-writing level, CPR certification | International Academies of Emergency Dispatch |
| Registration deadline (Recertification) | From 6 months before until 3 months after expiration | International Academies of Emergency Dispatch |
Facts verified Oct 18, 2026 against International Academies of Emergency Dispatch. Dates that have passed are removed automatically.
Interactive Emergency Medical Dispatch resources on PracticeTestGeeks, free to start:
The International Academies of Emergency Dispatch developed the Priority Dispatch System to bring a structured, repeatable process to emergency call-taking. Before the system existed, dispatchers relied on intuition and informal training, leading to inconsistent outcomes. The IAED protocols standardize every step — from the first words a caller hears to the final instruction given while help is in transit. ProQA, the software implementation of the Priority Dispatch System, guides dispatchers through branching logic trees so that no critical question is skipped, even under extreme stress. Many centers that use physical card sets rather than software still follow the same logical structure, and both formats appear on the written certification exam.
The IAED certifies dispatchers at several levels: EMD (basic), EMD-Q (quality assurance), and EMD-Q Instructor. Most entry-level candidates sit for the EMD exam after completing an approved 24-hour training course. The written test covers protocol knowledge, medical terminology, and the ethical responsibilities of the telecommunicator role. Passing requires demonstrating that you can select the right protocol card, ask questions in the correct sequence, and give accurate PAIs without deviation.
The Priority Dispatch System groups emergency calls into discrete Chief Complaints — each one mapped to its own protocol card numbered 1 through 36. When a call arrives, the dispatcher's first task is identifying the Chief Complaint so the correct card is opened immediately. Common Chief Complaints tested on the exam include Abdominal Pain/Problems (Protocol 1), Allergic Reaction (Protocol 2), Animal Bites/Attacks (Protocol 3), Assault/Sexual Assault (Protocol 4), Back Pain (non-traumatic or non-recent trauma, Protocol 5), Breathing Problems (Protocol 6), Burns/Explosion (Protocol 7), Carbon Monoxide/Inhalation/HAZMAT (Protocol 8), Cardiac or Respiratory Arrest/Death (Protocol 9), Choking (Protocol 11), Convulsions/Seizures (Protocol 12), Diabetic Problems (Protocol 13), Drowning/Diving Accident/SCUBA (Protocol 14), and many others through industrial accidents and traffic/transportation incidents.
Misidentifying the Chief Complaint is one of the most common dispatcher errors and a frequently tested exam concept. If a caller says her husband fell and hit his head but his main problem right now is difficulty breathing, the Chief Complaint is Breathing Problems, not Falls. The protocol that governs the presenting symptom — the reason the person needs help at this moment — takes priority. Exam questions routinely present layered scenarios to test whether you can isolate the primary complaint from secondary background details.
Once the Chief Complaint is identified, the dispatcher works through the Key Questions to assign a Determinant Code. Every code has two parts: a letter suffix that indicates acuity level and a number prefix that identifies the specific sub-problem within the Chief Complaint. The five acuity levels are Alpha (lowest priority — non-urgent), Bravo (urgent — potentially serious, no immediately life-threatening indicators), Charlie (potentially life-threatening — send ALS), Delta (life-threatening — immediate ALS response), and Echo (obvious or predictable cardiac or respiratory arrest — highest priority). Some protocols also use Omega for calls that can safely be handled with advice only, with no unit dispatch.
Example: a conscious, breathing patient with chest pain and no other life-threat indicators might receive code 10-C-1 (Chest Pain — potentially life-threatening — typical). A patient found in full cardiac arrest would receive 9-E-1 (Cardiac Arrest — Echo — obvious death excluded). The exam tests whether you can read a scenario and select the correct determinant without looking up every detail, so thorough familiarity with the letter levels is essential. Pay particular attention to the borderline between Charlie and Delta — that threshold appears repeatedly in practice questions because it drives critical resource allocation decisions.
Pre-Arrival Instructions are the scripted guidance dispatchers read to callers while emergency units respond. PAIs serve two purposes simultaneously: they improve patient outcomes by starting treatment before paramedics arrive, and they protect dispatchers and their agencies legally by ensuring every caller receives the same medically approved guidance. Deviation from approved PAI scripts — whether by adding extra steps, skipping steps, or paraphrasing — is a protocol violation and can be grounds for decertification. The exam tests exact PAI sequences for the highest-frequency scenarios: CPR for adults and infants, relief of choking in conscious and unconscious patients, emergency childbirth delivery, and severe bleeding control.
For CPR PAIs, dispatchers must confirm the patient is unresponsive, confirm absence of normal breathing, position the patient correctly (flat on the back, on a hard surface), locate hand placement on the lower half of the sternum, instruct the caller on rate (hard and fast, approximately 100–120 per minute), and cycle through compression-only CPR unless the dispatcher determines that mouth-to-mouth is appropriate. Each step is scripted — dispatchers do not improvise. Mock call scenarios in the exam packet frequently ask which PAI step comes next given a described situation, or which PAI is contraindicated given a patient's condition.
Every EMD call moves through three structured phases. The Interrogation Phase begins the moment the dispatcher answers. The dispatcher identifies the agency, obtains the location (address confirmed before anything else), gets a callback number, and then asks the Key Questions for the identified Chief Complaint. Key Questions are protocol-specific and must be asked in order; they cannot be skipped. The Dispatch Phase follows once enough information is gathered to assign a determinant code and send an appropriate resource. During this phase the dispatcher enters the call into CAD, broadcasts to units, and confirms response. The Post-Dispatch Phase runs concurrently with unit response — the dispatcher stays on the line, delivers PAIs as needed, monitors the patient's condition, updates units if the situation changes, and only releases the caller when instructed by policy or when help has arrived and taken over.
Exam items on call processing phases often present a dispatcher action — such as releasing a caller before units arrive, or skipping the address confirmation step to ask about the patient faster — and ask whether the action is correct or which protocol rule was violated. The address-first rule is one of the most tested: the location of the emergency is always obtained and confirmed before any other Key Question, because a call that drops or a caller who becomes incapacitated cannot receive help if the address is unknown.
Effective preparation combines three activities: memorizing the determinant code letter levels and their meanings, drilling Chief Complaint protocol sequences until they feel automatic, and practicing scenario-based questions that require you to apply rather than merely recall the protocols. The PDF on this page provides printable scenario questions you can annotate, discuss with a training partner, or use for timed drills. Focus extra attention on the protocols that appear most frequently in 911 calls in your center — Breathing Problems, Cardiac Arrest, Chest Pain, Unconscious/Fainting, and Traffic/Transportation Accidents together account for a large share of real call volume and receive proportional weight on the exam. Use each incorrect answer as a protocol review prompt: look up the exact card, trace the Key Questions, and confirm the correct determinant before moving on.
If you want more targeted practice, the emd practice test page covers the same material with additional questions and explanations.
If you want more targeted practice, the emd test page covers the same material with additional questions and explanations.
Print the PDF, work through every question, and then return to the full emd certification practice bank for additional scenario drilling and instant answer explanations. Consistent, protocol-focused preparation is the proven path to passing the IAED written exam on your first attempt.
Try these questions from our free Emergency Medical Dispatch practice tests. The correct answer and an explanation follow each question.
A caller reports a patient pinned under a car with burns on his legs from the exhaust. Rescuers can free him in 2 minutes. What should the EMD add to the response?
Answer: B. Ensure fire/rescue is responding for extrication and burn management
Entrapment with burns requires fire/rescue for safe extrication and burn management in addition to EMS.
An 'Omega' determinant code in MPDS typically results in which type of response?
Answer: C. No ambulance being sent or a low-priority no-lights response
Omega determinants identify low-acuity situations where no ambulance is dispatched or only a non-emergency response is warranted.
What term in MPDS describes the primary reason a caller is requesting emergency assistance?
Answer: C. Chief complaint
The chief complaint is the main problem or symptom reported by the caller and drives the selection of the correct MPDS protocol.
During a DLS call, a caller becomes panicked and begins yelling, making it hard to provide instructions. The dispatcher should:
Answer: B. Speak in a calm, firm, and controlled tone to redirect the caller's focus
Dispatchers are trained to use a calm, controlled, authoritative voice to de-escalate panicked callers and redirect focus to life-saving actions.