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Non-visible haematuria during culture-confirmed lower urinary tract infection — MSRA MCQ

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HardMicrohematuriaNon-visible haematuria during culture-confirmed lower urinary tract infectionMSRA

A 63-year-old woman presents with 4 days of dysuria, urinary frequency and suprapubic discomfort. She has no fever, flank pain or visible haematuria. A urine dipstick is positive for nitrites, leucocytes and blood 2+. Midstream urine culture grows Escherichia coli >10⁵ CFU/mL, susceptible to nitrofurantoin. She is a current smoker with a 30 pack-year history. She had one previous dipstick-positive result for blood during an episode of cystitis 18 months ago. Her blood pressure is 128/76 mmHg, eGFR is 82 mL/min/1.73 m², urine ACR is 1.4 mg/mmol and full blood count is normal. What is the most appropriate next management step?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: C — Treat the culture-confirmed urinary tract infection, then repeat urine testing after symptom resolution and refer using a suspected cancer pathway if non-visible haematuria remains unexplained

Explanation lettering: E = shown as A · C = shown as B · B = shown as C · A = shown as E

The immediate finding is non-visible haematuria during a microbiologically confirmed symptomatic urinary tract infection. It is therefore not currently unexplained. The appropriate first step is to treat the infection with culture-directed therapy and establish whether haematuria resolves. However, follow-up is essential: she is aged over 60 and, if non-visible haematuria persists after infection resolution with dysuria or a raised white cell count, NICE recommends suspected cancer pathway referral for bladder cancer. A is premature because the NICE criterion is unexplained non-visible haematuria; the positive culture provides a current explanation. Her smoking history increases concern if haematuria persists but does not remove that discriminator. C is inappropriate because renal function, blood pressure and ACR are normal, with no evidence suggesting a glomerular process. D delays treatment and does not address the need to determine whether haematuria persists once the infection has resolved. E incorrectly assumes that infection-associated haematuria needs no safety-netting; persistent or recurrent haematuria after successful treatment requires reassessment and may meet urgent referral criteria.

Reference: NICE NG12: Suspected cancer: recognition and referral — Urological cancers, recommendation 1.6.4 (Updated 15 April 2026) — https://www.nice.org.uk/guidance/ng12/chapter/recommendations-organised-by-site-of-cancer Right Decisions: Haematuria — non-visible (Reviewed 11 February 2026) — https://www.rightdecisions.scot.nhs.uk/dgrefhelp-nhs-dumfries-galloway/urology/haematuria-non-visible/