A 55-year-old woman has a 2.6 cm homogeneous adrenal mass of 8 Hounsfield units found on CT. Which test is recommended to exclude autonomous cortisol secretion?

1 mg overnight dexamethasone suppression test

Random morning serum cortisol level

Short Synacthen (ACTH stimulation) test

Plasma ACTH concentration alone

A 34-year-old nurse is found with a capillary glucose of 1.9 mmol/L. A sample taken during the episode shows high insulin, suppressed C-peptide and negative sulfonylurea screen. What is the most likely cause?

Exogenous insulin administration

Non-islet cell tumour hypoglycaemia

A 22-year-old woman with type 1 diabetes presents with vomiting. Glucose is 28 mmol/L, venous pH 7.08, bicarbonate 7 mmol/L, beta-hydroxybutyrate 6.2 mmol/L and potassium 3.0 mmol/L. IV 0.9% sodium chloride has been started. What is the most appropriate next step?

Replace potassium, holding insulin until it reaches 3.3 mmol/L

Give IV sodium bicarbonate before starting any insulin

Start a fixed-rate insulin infusion without added potassium

Give a subcutaneous rapid-acting insulin bolus immediately

Free DHA Endocrinology mock test

12 original exam-style questions from our Endocrinology bank, timed at the exam’s own pace, scored against the 65% DHA pass mark. They span 7 of the 8 blueprint domains, so you will see exactly where you are weakest - free, no sign-up.

Free diagnosticNo sign-up · no email · results instantly

Sit 12 original exam-style questions at real exam pace

These are 12 original questions taken from our Endocrinology bank, spread across 7 of the 8 domains of the published blueprint. You get 72 seconds per question, which is exactly the pace of the real END5492 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
65%: 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 Endocrinology licensing exam looks like

Candidates for a Endocrinology licence in the UAE sit a computer-based multiple-choice examination - DHA exam code END5492, delivered through Prometric for DHA, MOHAP and SHA, and through Pearson VUE for DOH Abu Dhabi. The DHA pass mark is 65% (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 Adrenal Disorders, Diabetes Mellitus, Endocrine Emergencies, Ethics and Patient Safety, Lipids, Obesity and Metabolism and 3 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 1,030 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 Endocrinology exam: the full blueprint

The published blueprint splits into 8 domains and 48 testable sub-topics. The diagnostic above samples across them, which is why its breakdown maps onto the structure the real paper is built from.

Diabetes Mellitus~25%8 topics
Thyroid Disorders~18%7 topics
Adrenal Disorders~12%6 topics
Pituitary and Hypothalamic Disorders~12%6 topics
Calcium, Bone and Parathyroid~12%6 topics
Reproductive Endocrinology and Gonadal Disorders~10%5 topics
Lipids, Obesity and Metabolism~7%5 topics
Endocrine Emergencies, Ethics and Patient Safety~4%5 topics

Questions: 150 multiple-choice (DHA END5492)
Duration: 3 hours, including registration
DHA pass mark: 65% - 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 Endocrinology 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.

Adrenal Disorders

A 30-year-old man with known Addison disease presents with vomiting, hypotension of 78/40 mmHg and confusion. What is the immediate drug treatment?

AOral prednisolone 5 mg
BIV dexamethasone 0.5 mg
CIV hydrocortisone 100 mgCorrect
DOral fludrocortisone 100 micrograms

Why: Adrenal crisis requires immediate IV or IM hydrocortisone 100 mg followed by ongoing dosing and IV fluids. Oral treatment is unreliable with vomiting and shock, and fludrocortisone is unnecessary at high hydrocortisone doses, which have sufficient mineralocorticoid activity.

Source: Endocrine Society Clinical Practice Guideline: Primary Adrenal Insufficiency 2016

Endocrinology sample questions with answers

4 more original exam-style Endocrinology 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 · Adrenal Disorders
A 55-year-old woman has a 2.6 cm homogeneous adrenal mass of 8 Hounsfield units found on CT. Which test is recommended to exclude autonomous cortisol secretion?
1. A1 mg overnight dexamethasone suppression test
2. BRandom morning serum cortisol level
3. CShort Synacthen (ACTH stimulation) test
4. DPlasma ACTH concentration alone
Show answer and explanation
Correct answer: A. 1 mg overnight dexamethasone suppression test
The 1 mg overnight dexamethasone suppression test is the recommended screen for autonomous cortisol secretion in every adrenal incidentaloma. A random cortisol is uninterpretable because of diurnal variation, and the Synacthen test assesses insufficiency, not excess.
Reference: ESE/ENSAT Guideline on Management of Adrenal Incidentalomas 2023
Question 2 · Diabetes Mellitus
A 34-year-old nurse is found with a capillary glucose of 1.9 mmol/L. A sample taken during the episode shows high insulin, suppressed C-peptide and negative sulfonylurea screen. What is the most likely cause?
1. AExogenous insulin administration
2. BInsulinoma
3. CSulfonylurea ingestion
4. DNon-islet cell tumour hypoglycaemia
Show answer and explanation
Correct answer: A. Exogenous insulin administration
Pharmaceutical insulin contains no C-peptide, so high insulin with suppressed C-peptide indicates exogenous insulin. Insulinoma and sulfonylurea ingestion both raise insulin and C-peptide together, and non-islet cell tumours suppress both insulin and C-peptide via IGF-2.
Reference: Endocrine Society Clinical Practice Guideline: Adult Hypoglycemic Disorders 2009
Question 3 · Diabetes Mellitus
A newly diagnosed 80 kg adult with type 1 diabetes is started on a basal-bolus regimen using a total daily dose of 0.5 units/kg/day, with 50% given as once-daily basal insulin. What is the starting basal insulin dose?
1. A20 units
2. B40 units
3. C10 units
4. D16 units
Show answer and explanation
Correct answer: A. 20 units
Total daily dose is 0.5 x 80 = 40 units, and half of this (20 units) is given as basal insulin, with the remaining 20 units split across meals. Choosing 40 units mistakenly gives the whole daily requirement as basal insulin and risks nocturnal hypoglycaemia.
Reference: ADA Standards of Care in Diabetes 2025
Question 4 · Diabetes Mellitus
A 22-year-old woman with type 1 diabetes presents with vomiting. Glucose is 28 mmol/L, venous pH 7.08, bicarbonate 7 mmol/L, beta-hydroxybutyrate 6.2 mmol/L and potassium 3.0 mmol/L. IV 0.9% sodium chloride has been started. What is the most appropriate next step?
1. AGive IV sodium bicarbonate before starting any insulin
2. BReplace potassium, holding insulin until it reaches 3.3 mmol/L
3. CStart a fixed-rate insulin infusion without added potassium
4. DGive a subcutaneous rapid-acting insulin bolus immediately
Show answer and explanation
Correct answer: B. Replace potassium, holding insulin until it reaches 3.3 mmol/L
Insulin drives potassium into cells, so starting it when potassium is below 3.3 mmol/L risks life-threatening hypokalaemia and arrhythmia; potassium must be replaced first. Bicarbonate is not indicated at a pH of 7.08 and would further lower potassium.
Reference: ADA Consensus Report: Hyperglycemic Crises in Adults with Diabetes 2024

Last reviewed September 2026. About these questions: every item is original, written to the published blueprint, with a rationale and a reference, and no recalled or leaked exam content is used. How we write our questions.

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.

Frequently asked questions

Is this Endocrinology mock exam really free?

Yes. All 12 questions, your score, the domain breakdown and the full worked answers are free, with no sign-up and no email required. The paid bank is a separate, much larger set of 450 questions.

Are these real Endocrinology exam questions?

No. They are original questions written to the official Endocrinology blueprint and drawn from our full bank - not leaked or recalled items, which would breach exam security and are frequently out of date. They follow the exam's format and domain weighting.

What is the pass mark for the Endocrinology exam?

65% for the DHA Endocrinology exam (END5492), as published in the DHA CBT Guideline, Sep 2026. Other authorities set their own pass marks, so confirm yours before booking. DHA reports only pass or fail - your actual score is never released to you, which is why a diagnostic like this is useful for seeing where you stand.

Does passing this mock mean I will pass the real exam?

No, and we will not claim otherwise. 12 questions cannot predict a full-length paper. What it does reliably show is which blueprint domains you are currently weakest in.

How many attempts do I get at the real exam?

Three in total across all UAE authorities under the Unified Professional Qualification Requirements - not three per authority. Each attempt costs roughly AED 1,030.

What topics does the Endocrinology exam cover?

The published blueprint splits into 8 domains covering 48 testable sub-topics: Diabetes Mellitus, Thyroid Disorders, Adrenal Disorders, Pituitary and Hypothalamic Disorders, Calcium, Bone and Parathyroid, Reproductive Endocrinology and Gonadal Disorders, Lipids, Obesity and Metabolism, Endocrine Emergencies, Ethics and Patient Safety. The full weighting table is on this page.

How long is the Endocrinology exam and how many questions?

The DHA Endocrinology exam (END5492) is 150 multiple-choice questions in 3 hours, including registration and the introduction, as published in the DHA CBT Guideline, Sep 2026. Other authorities set their own length and timing, so confirm theirs in the current candidate bulletin.

Do I need to create an account to take this mock exam?

No. There is no sign-up, no email capture and no payment. The questions, your score, the domain breakdown and the full worked answers are all free, and nothing is held back behind a form.