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Physician Associate Registration Assessment - Knowledge-Based Assessment (KBA)

This assessment is taken by graduating Physician Associate students from UK university programmes. Passing is a mandatory requirement to be able to register with the General Medical Council (GMC) and work as a Physician Associate.

Pass mark 119/40 240 minutes Real test fee £495 Royal College of Physicians (RCP) How many can I get wrong?
Little and often beats one big session. Five minutes on the bus counts.
Free practice questions
Try 3 real Physician Associate Registration Assessment - Knowledge-Based Assessment (KBA) questions
Have a go, then reveal the worked explanation. A taster from a bank of 200 original questions — unlock for unlimited drills and full timed mocks.
Q1. A 60-year-old patient complains of exertional calf pain that is relieved by rest. On examination, the foot is cool with weak pedal pulses. What is the most appropriate initial investigation to confirm the diagnosis of peripheral arterial disease?
  • A.  CT Angiography
  • B.  Duplex Ultrasound
  • C.  Ankle-Brachial Pressure Index (ABPI)
  • D.  Serum lactate measurement
Show answer & explanation
✓ Answer: C. Ankle-Brachial Pressure Index (ABPI)
The Ankle-Brachial Pressure Index (ABPI) is the recommended first-line investigation to confirm a diagnosis of peripheral arterial disease in primary care. A resting ABPI of ≤ 0.9 is diagnostic.
Q2. A 28-year-old with known asthma, using a salbutamol inhaler as needed, reports using it 4-5 times a week and waking with wheeze once weekly. According to NICE guidelines, what is the most appropriate next step in management?
  • A.  Add a long-acting beta-agonist (LABA) inhaler.
  • B.  Add a regular low-dose inhaled corticosteroid (ICS).
  • C.  Add a leukotriene receptor antagonist (LTRA) tablet.
  • D.  Advise an increase in the frequency of salbutamol use.
Show answer & explanation
✓ Answer: B. Add a regular low-dose inhaled corticosteroid (ICS).
NICE guidelines recommend adding a regular low-dose inhaled corticosteroid (ICS) as the first-line preventer therapy when a short-acting beta-agonist is used more than twice a week.
Q3. A 70-year-old man with known alcoholic liver cirrhosis is admitted with confusion, fever, and diffuse abdominal pain. An ascitic tap is performed. Which finding is diagnostic of Spontaneous Bacterial Peritonitis (SBP)?
  • A.  Ascitic fluid protein >25 g/L
  • B.  Ascitic fluid glucose <2.8 mmol/L
  • C.  Ascitic fluid neutrophil count >250 cells/mm³
  • D.  A positive ascitic fluid gram stain
Show answer & explanation
✓ Answer: C. Ascitic fluid neutrophil count >250 cells/mm³
The diagnosis of Spontaneous Bacterial Peritonitis (SBP) is confirmed by an ascitic fluid neutrophil count of greater than 250 cells/mm³. This warrants immediate empirical antibiotic treatment.
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Cardiovascular System · 29
Respiratory System · 28
Gastrointestinal System · 27
Nervous System · 29
Musculoskeletal System · 30
Renal & Urological System · 20
Obstetrics & Gynaecology · 19
Paediatrics · 18
Physician Associate Registration Assessment - Knowledge-Based Assessment (KBA) — common questions
Frequently asked
How many questions are in the Physician Associate Registration Assessment - Knowledge-Based Assessment (KBA)?
The exam has 40 questions. Every Revision Robin mock uses the same 40-question format so your practice matches the real thing.
What is the pass mark for the Physician Associate Registration Assessment - Knowledge-Based Assessment (KBA)?
You need 119 out of 40 correct to pass, which is about 298%. Our mocks mark you against this exact threshold.
How long do you get?
The test is timed at 240 minutes. Our full mock runs on the same clock so you can practise your pacing.
Are these the real exam questions?
No. Our questions are original and written to match the current syllabus, so they give realistic practice without copying the official paper. Every answer comes with a plain-English explanation. Always confirm current rules and content with Royal College of Physicians (RCP).
How much does the official test cost?
The official Royal College of Physicians (RCP) fee is £495. Revision Robin practice is separate and helps you pass first time so you only pay that fee once.