5th International Conference on Primary Care and Global Healthcare

Leire Diez Flecha, MD, graduated in Medicine from the University of Alcalá de Henares. She completed her residency training in family and community medicine at the Hospital Fundación Jiménez Díaz (Madrid) between 2017 and 2021. Following one year of practice in out-of-hospital emergency medical services, she has been working as a primary care physician for the Community of Madrid since 2022. Her academic contributions include peer-reviewed publications in primary care journals, as well as multiple posters and oral communications at national medical congresses.

Objective: The main objective of the present study is to conduct a scientific review and a critical comparative analysis of the criteria published between 2025 and 2026 regarding the management of microscopic hematuria in adults. Special emphasis is placed on the guidelines from the American Urological Association (AUA) and the National Institute for Health and Care Excellence (NICE). Through this synthesis, we aim to provide family physicians with a safe, efficient, and unified framework of action, culminating in the creation of a practical clinical algorithm directly applicable in the primary care setting to optimize referrals, ensure patient safety, and structure robust clinical safety-netting protocols.

Methodology: Narrative review and critical comparative analysis of clinical practice guidelines and validation studies indexed in PubMed/MEDLINE, SciELO, and ScienceDIRECT between January 2025 and October 2026. MeSH terms and Boolean operators were utilized.

Results: Universal consensus exists that urine dipstick testing registers a 20-26% false-positive rate due to confounding factors (dehydration, exercise, povidone-iodine, or menstruation); hence, both AUA and NICE prohibit diagnosis without formal confirmation via quantitative microscopy (≥3 red blood cells per high-power field).However, massive observational studies (TriNetX and VHA) reveal that 31-54% of patients lack confirmatory sediment analysis, leading to premature referrals and overutilization of cystoscopies against a true bladder cancer detection rate of only 0.7% in general MH cohorts. NICE discourages routine referral for asymptomatic patients under 50, prioritizing renal function evaluation. Following a urinary tract infection, microscopic hematuria takes a median of 60 days to resolve, justifying a 6-to-12-week delay before re-testing to prevent residual urothelial inflammation alerts. Renal ultrasound consolidates as a safe and cost-effective initial imaging modality over computed tomography for low- and intermediate-risk groups, restricting cytologies and urine biomarkers to specialized care.

Conclusions: The diagnosis of microscopic hematuria mandatorily requires quantitative microscopy. Applying the updated age- and sex-based de-escalation criteria from AUA (2025) and NICE (2026) allows safe management of low-risk patients within Primary Care. Respecting post-infection urothelial repair timelines and implementing solid clinical safety-netting protocols at the health center are critical to optimizing resources and preventing iatrogenic harm.

Keywords: Hematuria, Primary Health Care, Practice Guideline, Mass Screening, Referral and Consultation.