Pablo Daniel Monteiro Soares

I am a biomedical scientist working in the day-to-day microbiology routine of a hospital laboratory. My day is made of blood cultures that need to be called out in the same shift, urine cultures that require deciding between infection and contamination, Gram stains read under pressure to guide empirical therapy, and antibiograms that go straight into the prescription.

This site was born from that context. I noticed that most Portuguese-language material treats microbiology as exam content — memorising morphologies, listing culture media — and hardly ever explains what actually matters on the bench: why bottle volume changes blood-culture sensitivity, why the urine-culture cut-off depends on the collection method, why a 15-minute delay in McFarland inoculation shifts a zone diameter.

So I write what I wish I had read when I started: the procedure, the clinical reason, and the ready-made calculation. The calculators exist because errors in CFU/mL and dilution math are the most silent error in the department. The tips come from routine, not from a textbook. And the microorganism catalogue brings what is actually checked at the bench: how it grows, what causes confusion, and what can never be reported as susceptible.

Nothing here replaces your service's SOP or current quality-control standards. This is support material, written by someone at the bench, for someone at the bench.