NHA · CET
Certified EKG Technician (CET) practice exams
NHA's Certified EKG Technician exam — practice against the official CET test plan, with every answer explained.
Or read 15 sample questions with answers.
About the CET exam
The CET exam covers safety and patient care for EKG technicians, acquiring EKGs (equipment, skin prep, lead placement, artifacts, Holter and stress testing) and analyzing tracings (heart rate, rhythm, intervals, arrhythmias and pacemakers).
These practice exams follow NHA's CET test plan: Safety, Compliance and Coordinated Patient Care (32 items), EKG Acquisition (44) and EKG Analysis and Interpretation (24). Tracings are described in words rather than shown as images.
The real exam
Public information published by NHA. A ExamWize practice exam matches this format — it is not a copy of the exam's contents.
- Format
- 120 questions (100 scored, 20 unscored pretest) in 2 hours, computer-based.
- Cost
- NHA lists the exam fee on its website — check NHA for current pricing.
- Scoring
- Scaled score from 200 to 500; 390 or higher is passing. NHA does not publish a percent-correct equivalent, so practice scores here are an estimate, not a prediction of your scaled score.
- Validity
- Renewed every two years with 10 continuing education credits, per NHA's renewal requirements.
Practice by exam topic
ExamWize practice exams draw questions in these same proportions, from a bank of 596 CET questions. Open a topic for what it covers and free questions with answers.
Who it's for
- Students finishing an EKG technician program
- Medical assistants and patient care technicians adding EKG certification
- Telemetry and monitor technicians
How to prepare
- EKG acquisition is the biggest domain — memorize all ten electrode positions and common artifacts.
- Know the graph paper: small box 0.04 s, large box 0.20 s, 25 mm/s and 10 mm/mV.
- Practice heart rate methods: 6-second strip × 10, 300 ÷ large boxes, 1,500 ÷ small boxes.
- Learn normal intervals (PR 0.12–0.20 s, QRS under 0.12 s) and the key arrhythmias.
See the free CET cheat sheet for a one-page domain summary, and the content policy for how these questions are written.
Free CET practice resources
- 15 free CET practice questionsSpread across the exam's topics, each with the answer and an explanation for every option.
- Free 10-question diagnosticA quick, scored check of where you stand, with no account needed.
- CET cheat sheetThe topics and the facts that come up most, on one page.
- CET study guideHow to plan your preparation.
CET exam FAQ
- What is the format of the CET exam?
- 120 questions (100 scored, 20 unscored pretest) in 2 hours, computer-based.
- How much does the CET exam cost?
- NHA lists the exam fee on its website — check NHA for current pricing.
- How is the CET exam scored?
- Scaled score from 200 to 500; 390 or higher is passing. NHA does not publish a percent-correct equivalent, so practice scores here are an estimate, not a prediction of your scaled score.
- How long is the credential valid?
- Renewed every two years with 10 continuing education credits, per NHA's renewal requirements.
- How many CET practice questions does ExamWize have?
- 596 original practice questions, drawn into full practice exams in the same format and domain proportions as the real CET. Every option has its own explanation.
- Are these real CET exam questions?
- No. Every question is original, written from NHA's public content outline — never copied from the real exam or from exam dumps. They match the real exam's format, not its contents.
- Can I try ExamWize for free?
- Yes. The free diagnostic has 10 CET practice questions with a full explanation for every answer, and no account is needed.