Healthcare · Cardiology
Certified EKG Technician (CET) Exam — Practice
The NHA certification exam for EKG technicians: safety, compliance and patient care, 12-lead, Holter and stress-test acquisition, artifact troubleshooting, and rhythm, interval and ischemia recognition, weighted to the NHA CET test plan.
Questions last checked against the official sources on October 11, 2026.
The real exam at a glance
- Questions
- 120 (100 scored, 20 pretest)
- Time
- 2 hours
- To pass
- Scaled score 390 (scale 200–500)
- Eligibility
- Training program or work experience, plus 10 EKGs on live people
- Retakes
- 3 attempts, 30 days apart; then 1 year
- Renewal
- Every 2 years, 10 CE credits
- Body
- NHA
What you'll practise
Try a question
When should CPR resume after an AED delivers a shock?
- Immediately, starting with compressions
- After checking a pulse for one minute
- After a second shock is always given
- Only after the paramedics arrive
Show the answer
A. Immediately, starting with compressions — AHA: resume CPR immediately after the shock, beginning with compressions.
Sample questions by topic (in English)
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Questions about the EKG tech (CET)
Is this the official EKG tech (CET)?
No. Semplr is independent and not affiliated with the exam body. We write every question ourselves, in the official format and at the official level.
What is the real EKG tech (CET) like?
Questions: 120 (100 scored, 20 pretest). Time: 2 hours. To pass: Scaled score 390 (scale 200–500). Eligibility: Training program or work experience, plus 10 EKGs on live people. Retakes: 3 attempts, 30 days apart; then 1 year. Renewal: Every 2 years, 10 CE credits. Body: NHA.
How is my practice marked?
Instantly. You see your score against the pass mark, and an explanation for every question — including the ones you got right.
Can I take it on my phone?
Yes. The whole mock exam works on a phone, and your progress is saved in your browser.
Ready for a full run?
One sitting, real timing, then your score against the pass mark.
Start the free mock exam