Abstract Background and Aims Albuminuria has been a recognized marker of cardiovascular risk for several years. Since 2012, the KDIGO guidelines have included this marker in the definition of chronic kidney disease (CKD), regardless of the Glomerular Filtration Rate (GFR). Despite this, a decade after, albuminuria is rarely researched as a marker of kidney disease, especially in Primary Health Care. We aim to assess the percentage of patients referred from the Health Centre to the Nephrology consultation of a district hospital, with an indication of the albuminuria value and also which percentage considered it the main cause of referral. Method Retrospective observational study of all patients referred from the Health Centre to the Nephrology consultation, from January 2022 to May 2023. A statistical analysis was carried out using Microsoft Excel 2016 (Microsoft ™). Results A total of 248 patients were referred and accepted for the nephrology consultation, 52.4% female, average age 74.8 years, with almost 80% (n = 198) of patients aged 65 or over and 41.5% (n = 103) aged over 80. The reasons for referral were: 53.6% due to an increase in creatinine levels; 21% due to imaging alterations; 19% due to a reduction in GFR and only 6.4% (16 patients) due to a urinary alteration, which included the presence of albuminuria. Only 26.2% (n = 65) of the patients referred had mentioned the value of albuminuria, and of these, around 73% (n = 49) already had an albuminuria value greater than or equal to 30 mg/dL; however, in only 14 of these patients (5.6% of all the patients referred) was albuminuria the main reason for the referral. Of the 49 patients with albuminuria: 44 patients (89.8%) had cardiovascular disease (around 98% with hypertension and around 28% with HF) and 34 patients (69.4%) had diabetes; 32 patients (65.3%) were medicated with ACE inhibitors/ARBs and only 13 patients (26.5%) were medicated with iSGLT2. The percentages of use of ACEIs/ARAs and iSGLT2 remain the same when analyzing the 14 patients who were referred for albuminuria. Conclusion Albuminuria remains an overlooked marker of CKD despite being an early marker and for which there are several interventions that seem to prevent the worsening and progression of CKD. It is imperative to train doctors, especially family doctors, in the early diagnosis of CKD, particularly in the presence of albuminuria and to implement measures to control it.