DHA Dialysis Technologist exam questions
Haemodialysis principles, water treatment, vascular access and complications.
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DHA Dialysis Technologist exam at a glance
- Exam code
- RDT5162
- Questions
- 150 MCQs
- Duration
- 3 hours
- Pass mark
- 55%
- Fee per attempt
- USD 240 (about AED 880)
- Result
- Pass or fail, no score
From the DHA CBT Guideline, Sep 2026. Delivered by Prometric; three attempts in total across the UAE authorities. Full DHA exam guide.
Try two questions from this bank
Original questions from the bank - pick an answer to see the rationale and reference.
The machine shows a conductivity alarm. What does the machine automatically do to protect the patient?
Choose an answer to see the rationale.
A patient's pre-dialysis urea is 25 mmol/L and post-dialysis urea is 8 mmol/L. What is the urea reduction ratio, and does it meet the usual minimum target?
Choose an answer to see the rationale.
Not sure where you stand? Sit 12 of these questions free, timed at real exam pace, and see which domains you are weakest in.
Take the free mock exam →Liked those? The full bank has 450 questions at this standard - every one with a rationale and a reference.
Get the full bank - AED 249What's inside
- ✓3 full-length papers (~150 Q each)
- ✓450 questions, no overlap between papers
- ✓Four options, one unambiguous best answer
- ✓A full rationale on every question
- ✓A real guideline or textbook reference
- ✓Every sub-topic in the published blueprint
The Dialysis Technologist exam in every GCC country
| Regulator | Exam | Format | Pass mark | Fee per attempt | Practise |
|---|---|---|---|---|---|
| DHA Dubai | Dialysis Technologist (RDT5162) | 150 MCQs in 3 hours | 55% | USD 240 (about AED 880) | DHA questions → |
| DOH Abu Dhabi, Al Ain and Al Dhafra | DOH licensing exam Regulator-wide format | Written + oral/OSCE | Pass / fail only | Not published | DOH questions → |
| MOHAP Northern Emirates - Ajman, Umm Al Quwain, Ras Al Khaimah and Fujairah | MOHAP licensing exam Regulator-wide format | Computer-based | Not published | Not published | MOHAP questions → |
| SHA Emirate of Sharjah | SHA licensing exam Regulator-wide format | Set at assessment | Not published | Not published | SHA questions → |
| SCFHS Kingdom of Saudi Arabia | SCFHS licensing exam Regulator-wide format | 200 MCQs, 240 min | 500-560 of 800 | Not published | SCFHS questions → |
| QCHP State of Qatar | QCHP licensing exam Regulator-wide format | 150 MCQs, 3 hrs | 50-65% | Not published | QCHP questions → |
| NHRA Kingdom of Bahrain | NHRA licensing exam Regulator-wide format | Prometric CBT | Not published | Not published | NHRA questions → |
| OMSB Sultanate of Oman | OMSB licensing exam Regulator-wide format | Computer-based OC exam | Not published | Not published | OMSB questions → |
| Kuwait MOH State of Kuwait | Kuwait MOH licensing exam Regulator-wide format | 150 MCQs, 170 min | 60-70% | Not published | Kuwait MOH questions → |
exact exam published for Dialysis Technologist
From each regulator's own exam pages; anything a regulator does not publish says so. Assessment mode also depends on your licence title, so confirm your route on your eligibility notice.
Try 15 free Dialysis Technologist questions with answersDifferent from the samples on this page - each with a full explanationStart →What the Dialysis Technologist exam covers
The published blueprint for this exam breaks into 8 domains and 50 testable sub-topics. Our bank covers every one of them - here is the full map, so you can see exactly what you are expected to know.
Renal Physiology and Kidney Failure~10%6 topics
- Normal kidney functions and glomerular filtration
- CKD staging by eGFR and albuminuria
- Acute kidney injury and indications for dialysis
- Fluid, electrolyte and acid-base disturbances in kidney failure
- Renal anaemia and erythropoiesis-stimulating agents
- CKD-mineral bone disorder and phosphate binders
Haemodialysis Principles and Adequacy~18%7 topics
- Diffusion, convection, ultrafiltration and adsorption
- Dialyser membranes: low-flux, high-flux, KUF and clearance
- Counter-current flow and blood and dialysate flow rates
- Urea reduction ratio and Kt/V
- Post-dialysis blood sampling technique
- Ultrafiltration rate and target weight assessment
- Haemodiafiltration and middle molecule removal
Water Treatment and Dialysate~15%7 topics
- Pre-treatment: sediment filters, softeners and carbon tanks
- Chlorine and chloramine testing and limits
- Reverse osmosis: rejection, recovery and monitoring
- Microbiological limits: bacteria and endotoxin action levels
- Chemical contaminants: aluminium, chloramine, fluoride
- Distribution loop disinfection
- Dialysate composition, bicarbonate concentrate and conductivity
Dialysis Equipment and Machine Monitoring~15%7 topics
- Extracorporeal circuit: blood pump, lines and pressure monitors
- Arterial and venous pressure alarms
- Air detector and venous line clamp
- Blood leak detector
- Conductivity and temperature alarms with bypass
- Priming, set-up and pre-treatment safety checks
- Machine disinfection and preventive maintenance
Vascular Access~12%6 topics
- AV fistula, AV graft and central venous catheter comparison
- Fistula maturation and the rule of 6s
- Assessment: look, listen, feel before cannulation
- Cannulation techniques: rope-ladder, area and buttonhole
- Access recirculation and line reversal
- Venous needle dislodgement and access complications
Intradialytic Complications and Emergencies~12%6 topics
- Intradialytic hypotension
- Muscle cramps
- Dialysis disequilibrium syndrome
- Haemolysis and its causes
- Air embolism
- Dialyser reactions and cardiac arrest on dialysis
Peritoneal Dialysis and Continuous Therapies~8%5 topics
- Peritoneal dialysis principles and solutions
- CAPD and APD exchanges
- PD peritonitis recognition
- Continuous kidney replacement therapy modalities
- Regional citrate anticoagulation monitoring
Infection Control and Patient Safety~10%6 topics
- Standard precautions and hand hygiene at the dialysis station
- Hepatitis B isolation, screening and vaccination
- Hepatitis C and HIV precautions
- Catheter care and bloodstream infection prevention
- Sharps and blood spill management
- Documentation, incident reporting and patient identification
6 worked Dialysis Technologist practice questions
Original exam-style questions from the bank, spread across the blueprint domains. They are not real or recalled exam questions. Try each one, then open the answer for the rationale and reference. None of them appear in the free mock exam, so reading them will not spoil it.
Question 1 · Dialysis Equipment and Machine Monitoring
A blood leak alarm sounds and the dialysate outflow is visibly red. A test strip confirms blood in the dialysate. What is the safest action?
- AReset the alarm and continue
- BIncrease the dialysate flow rate
- CReturn all blood quickly at high pump speed
- DStop treatment, clamp lines and do not return the blood
Show answer and explanation
Correct answer: D. Stop treatment, clamp lines and do not return the blood
A confirmed gross blood leak indicates membrane rupture with a risk of contaminating the blood with non-sterile dialysate, so treatment is stopped and the blood is not returned. Resetting the alarm ignores a real breach of the sterile barrier.
Reference: Daugirdas JT. Handbook of Dialysis, 5th ed.
Question 2 · Dialysis Equipment and Machine Monitoring
Why is the dialyser and blood circuit primed with 0.9% sodium chloride before connecting the patient?
- ATo warm the blood before connection
- BTo provide systemic anticoagulation
- CTo test the dialysate conductivity
- DTo remove air and sterilant residues
Show answer and explanation
Correct answer: D. To remove air and sterilant residues
Priming removes air and flushes out sterilant and manufacturing residues from the dialyser and lines, reducing the risk of air embolism and reactions. Anticoagulation is achieved with heparin, not saline priming.
Reference: Daugirdas JT. Handbook of Dialysis, 5th ed.
Question 3 · Haemodialysis Principles and Adequacy
During haemodialysis, urea moves from the blood into the dialysate mainly by which process?
- ADiffusion down a concentration gradient
- BConvection with ultrafiltration
- COsmosis of water into the blood
- DAdsorption onto the membrane
Show answer and explanation
Correct answer: A. Diffusion down a concentration gradient
Small solutes such as urea and potassium are removed mainly by diffusion from higher concentration in blood to lower concentration in dialysate. Convection becomes more important for larger middle molecules, as in haemodiafiltration.
Reference: Daugirdas JT. Handbook of Dialysis, 5th ed.
Question 4 · Intradialytic Complications and Emergencies
A new patient with a urea of 48 mmol/L is about to start his first haemodialysis session. Which prescription best reduces the risk of dialysis disequilibrium syndrome?
- AShort session with reduced blood flow
- BA 5-hour session at maximum blood flow
- CHypotonic dialysate to correct sodium
- DDouble ultrafiltration to remove fluid
Show answer and explanation
Correct answer: A. Short session with reduced blood flow
Disequilibrium is caused by rapid urea removal producing an osmotic shift into the brain, so initial sessions are short and gentle with reduced blood flow and a smaller dialyser. Long high-efficiency sessions increase the risk.
Reference: Daugirdas JT. Handbook of Dialysis, 5th ed.
Question 5 · Peritoneal Dialysis and Continuous Therapies
A patient on CRRT with regional citrate anticoagulation has a rising total calcium, falling ionised calcium and a total-to-ionised calcium ratio of 2.7. What does this indicate?
- AInadequate anticoagulation of the filter
- BCitrate accumulation
- CNormal citrate metabolism
- DHypophosphataemia
Show answer and explanation
Correct answer: B. Citrate accumulation
A total-to-ionised calcium ratio above 2.5 indicates citrate accumulation from impaired citrate metabolism, often in liver failure or shock. Citrate delivery should be reduced or stopped according to protocol.
Reference: KDIGO Clinical Practice Guideline for Acute Kidney Injury 2012
Question 6 · Vascular Access
Because of poor flow, the arterial and venous lines are reversed for a session. What is the expected effect?
- AMore recirculation and a lower dose
- BLess recirculation and a higher dose
- CNo change in delivered clearance
- DA higher urea reduction ratio
Show answer and explanation
Correct answer: A. More recirculation and a lower dose
With reversed lines, cleaned blood returned upstream is drawn back into the arterial line, increasing recirculation and reducing the effective dialysis dose. This should be documented and considered when interpreting adequacy results.
Reference: Daugirdas JT. Handbook of Dialysis, 5th ed.
Last reviewed September 2026
About these questions: every question is original, written to the published blueprint, with a rationale and a reference. No recalled or leaked exam content is used. How we write our questions.
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