Free DHA Dialysis Technologist mock test
12 original exam-style questions from our Dialysis Technologist bank, timed at the exam’s own pace, scored against the 55% DHA pass mark. They span 8 of the 8 blueprint domains, so you will see exactly where you are weakest - free, no sign-up.
Sit 12 original exam-style questions at real exam pace
These are 12 original questions taken from our Dialysis Technologist bank, spread across 8 of the 8 domains of the published blueprint. You get 72 seconds per question, which is exactly the pace of the real RDT5162 exam (14 minutes for 12). At the end you will see which domains you are weakest in, and the full worked reasoning for every question.
- 12
- questions
- 14:24
- time limit
- 55%
- DHA pass mark
A short diagnostic cannot predict whether you will pass - only the real exam does that. It will show you, honestly, where you currently stand.
What the real Dialysis Technologist licensing exam looks like
Candidates for a Dialysis Technologist licence in the UAE sit a computer-based multiple-choice examination - DHA exam code RDT5162, delivered through Prometric for DHA, MOHAP and SHA, and through Pearson VUE for DOH Abu Dhabi. The DHA pass mark is 55% (DHA CBT Guideline, Sep 2026); other authorities set their own, so confirm yours before booking. The result is reported to you as pass or fail only - your score is never released.
Pass marks at a glance: DHA exam codes and pass marks for all written exams in one sourced table.
The paper is built to a published blueprint, which is why a domain-by-domain diagnostic is more useful than a raw percentage. Your questions above were drawn from across Dialysis Equipment and Machine Monitoring, Haemodialysis Principles and Adequacy, Infection Control and Patient Safety, Intradialytic Complications and Emergencies and 4 more - the same areas the real paper weights.
Before you can book the exam at all you need Dataflow primary source verification of your degree, licence and experience, which typically runs several weeks. Candidates routinely underestimate this and end up sitting the exam sooner after study than they planned. Check where you stand with our free eligibility checker or confirm whether your title even requires an exam using the Prometric exam checker.
You get three attempts in total across all UAE authorities - not three each - under the Unified Professional Qualification Requirements. At roughly AED 880 per attempt, plus the licensing delay each failure adds to your visa and start date, the cost of going in underprepared is not really the exam fee.
What is on the Dialysis Technologist exam: the full blueprint
The published blueprint splits into 8 domains and 50 testable sub-topics. The diagnostic above samples across them, which is why its breakdown maps onto the structure the real paper is built from.
- Renal Physiology and Kidney Failure~10%6 topics
- Haemodialysis Principles and Adequacy~18%7 topics
- Water Treatment and Dialysate~15%7 topics
- Dialysis Equipment and Machine Monitoring~15%7 topics
- Vascular Access~12%6 topics
- Intradialytic Complications and Emergencies~12%6 topics
- Peritoneal Dialysis and Continuous Therapies~8%5 topics
- Infection Control and Patient Safety~10%6 topics
- Questions
- 150 multiple-choice (DHA RDT5162)
- Duration
- 3 hours, including registration
- DHA pass mark
- 55% - reported as pass or fail only
Figures for the DHA exam, from the DHA CBT Guideline, Sep 2026. DOH, MOHAP, SCFHS, QCHP, NHRA and OMSB set their own length, timing and pass mark. See the DHA exam guide and pass marks for every DHA exam.
A worked Dialysis Technologist exam question
Every question in the diagnostic and in the paid bank is written to this standard: a clinical stem, four plausible options and the reasoning for the answer, with its source.
Dialysis Equipment and Machine Monitoring
The arterial pressure alarm shows a more negative pressure than usual, and the line is collapsing. What is the most likely cause?
- APoor inflow from needle positionCorrect
- BClot in the venous drip chamber
- CRupture of the dialyser membrane
- DDialysate conductivity too high
Why: Excessively negative arterial pressure means the pump is pulling more blood than the access supplies, often due to needle position against the vessel wall, access stenosis or hypotension. A venous chamber clot affects venous rather than arterial pressure.
Source: Daugirdas JT. Handbook of Dialysis, 5th ed.
Dialysis Technologist sample questions with answers
4 more original exam-style Dialysis Technologist questions, worked in full. They are not real or recalled exam questions, and none of them is in the diagnostic above, so sit that first if you have not.
Question 1 · Dialysis Equipment and Machine Monitoring
The venous pressure alarm shows a sudden rise well above the patient's usual value. Which is the most likely cause?
- AArterial needle against the vessel wall
- BDialysate temperature set too low
- CLeak at the arterial line connection
- DClotting in the venous chamber or line
Show answer and explanation
Correct answer: D. Clotting in the venous chamber or line
Venous pressure reflects resistance to blood return, so clotting in the venous chamber, kinked venous line or venous needle infiltration raises it. An arterial needle against the vessel wall makes arterial pressure more negative.
Reference: Daugirdas JT. Handbook of Dialysis, 5th ed.
Question 2 · Haemodialysis Principles and Adequacy
At the end of a session, how should the post-dialysis urea sample be taken to avoid dilution by access recirculation?
- ADraw from the venous line at full blood flow
- BDraw 2 hours after the patient has gone home
- CSlow the pump briefly, then sample arterial line
- DDraw from the dialysate outlet sampling port
Show answer and explanation
Correct answer: C. Slow the pump briefly, then sample arterial line
Slowing the blood pump for about 15 seconds clears recirculated blood from the arterial line before sampling, giving an accurate post-dialysis value. Sampling at full flow underestimates post urea and overestimates the delivered dose.
Reference: KDOQI Clinical Practice Guidelines for Hemodialysis Adequacy 2006
Question 3 · Infection Control and Patient Safety
How often should HBsAg be tested in a haemodialysis patient who is HBV-susceptible (not immune and not infected)?
- AEvery year
- BOnly at admission
- CEvery 5 years
- DEvery month
Show answer and explanation
Correct answer: D. Every month
HBV-susceptible patients, including vaccine non-responders, should be screened monthly for HBsAg so that new infections are detected quickly and isolation started. Annual testing is used for anti-HBs in vaccine responders.
Reference: CDC Recommendations for Preventing Transmission of Infections Among Chronic Hemodialysis Patients 2001
Question 4 · Haemodialysis Principles and Adequacy
Why are blood and dialysate run in opposite directions through the dialyser?
- ATo reduce the risk of air entry
- BTo lower the transmembrane pressure
- CTo prevent clotting in the dialyser
- DTo maintain the concentration gradient
Show answer and explanation
Correct answer: D. To maintain the concentration gradient
Counter-current flow maintains a favourable concentration gradient along the entire length of the fibres and maximises diffusive clearance. Running both in the same direction lets the gradient fall towards the outlet and reduces clearance.
Reference: Daugirdas JT. Handbook of Dialysis, 5th ed.
How to use this diagnostic properly
- 1Sit it cold, once. Do not look anything up. A diagnostic you help yourself through tells you nothing. The number you get is only useful if it is honest.
- 2Read every rationale - especially the ones you got right. Getting a question right by elimination is not the same as knowing it. The worked reasoning is free above, whether or not you buy anything.
- 3Work weakest domain first. The breakdown orders your domains worst-first for exactly this reason. Studying what you are already good at feels productive and moves nothing.
- 4Re-sit under full exam conditions later. The real paper is far longer than this and stamina matters. Full-length timed papers are what the paid bank is for.