• Correct specimen collection technique (midstream urine)
• Proper dipstick technique including timing
• Systematic and accurate interpretation of each parameter
• Ability to link dipstick findings to likely diagnoses
• Knowledge of when further testing is required (MCS, imaging, bloods)
• Clear communication of findings to the patient and proposed next steps

Always instruct the patient on correct midstream urine (MSU) collection technique. This is frequently tested as a communication task within the station.

1. Clean the urethral area with a moist wipe (front to back for females)
2. Begin urinating into the toilet
3. After the initial stream, collect the midstream portion into the specimen cup without stopping
4. Replace the lid firmly and label the cup immediately

Examiner Tip: If the patient has a urinary catheter, collect urine from the sampling port – never from the drainage bag.

1. Check the expiry date on the dipstick container
2. Ensure the urine sample is fresh – dipstick should ideally be performed within 2 hours of collection
3. Dip the strip fully into the urine for 1–2 seconds, covering all reagent pads
4. Remove and tap the edge (not wipe) against the container rim to remove excess urine
5. Hold the strip horizontally and read each parameter at the exact time specified on the container (typically 30–60 seconds per parameter)
6. Compare each pad against the colour chart on the container in good lighting

Common Mistake: Do not read the strip flat on a surface – fluid can run between pads and give false results. Always hold it horizontally.

In the OSCE, you must integrate the dipstick results with the clinical presentation – not just read the numbers. Here are the most common clinical scenarios:

Urinary Tract Infection (UTI)

• Positive leucocytes + positive nitrites = most likely bacterial UTI
• Positive leucocytes alone (negative nitrites) = sterile pyuria – consider chlamydia, TB, partially treated UTI, or contamination
• Blood and protein may also be present

Examiner Tip: If leucocytes and nitrites are both positive in a symptomatic woman under 65, Australian guidelines support empirical antibiotic treatment without waiting for MCS results.

Diabetes Mellitus

• Glycosuria (glucose 2+ or more) in a non-pregnant adult should prompt a fasting blood glucose or HbA1c
• Ketones + glucose = DKA until proven otherwise – this is an emergency
• Glycosuria in pregnancy can be normal – renal threshold for glucose decreases in pregnancy

Haematuria

• Positive blood without leucocytes or nitrites = non-infective cause – consider urolithiasis, malignancy, or glomerulonephritis
• Macroscopic haematuria in a patient over 50 = urological malignancy until proven otherwise – refer urgently
• Microscopic haematuria on two or more occasions warrants urology referral and CT urogram

Proteinuria

• Trace protein can be normal, especially after exercise or fever
• Persistent proteinuria (2+ or more) requires urine albumin-creatinine ratio (ACR) and renal function testing
• Proteinuria + haematuria + hypertension = glomerulonephritis until proven otherwise
• Significant proteinuria in pregnancy should raise suspicion for pre-eclampsia

Examiner Tip: Always perform a visual inspection of the urine first before dipping – this shows clinical thoroughness and examiners notice it.

Examiner Tip: When you present your findings, do not just list each parameter. Group the positive findings and link them to a diagnosis: ‘The positive leucocytes and nitrites together strongly suggest a urinary tract infection, which fits with this patient’s symptoms of dysuria and frequency.’

Examiner Tip: Know the difference between haemolysis (positive dipstick blood, no red cells on microscopy) and true haematuria (positive dipstick + red cells on MCS).

Common Mistake: Reading the dipstick too early or too late – timing matters. Use a clock or count the seconds if needed.

Common Mistake: Presenting each parameter individually without integrating findings – this reads like a checklist, not clinical reasoning.

Common Mistake: Forgetting to mention next steps after interpreting the dipstick – always close with a management plan.

Common Mistake: Not commenting on the visual appearance of the urine before dipping – this is a mark that many candidates miss.