The Laboratory Requisition Form: Why Every Field Matters
The requisition form is how a clinician talks to the microbiology laboratory. What each field means, what a blank field costs, and why filling it completely changes the diagnosis.
A GUIDEBOOK ON LABORATORY MEDICINE
Medical Microbiology & Laboratory Diagnosis
Bacteria, viruses, fungi, and parasites explained the way the bench and the ward actually use them: how tests work, how to read results, and where diagnosis goes wrong. With interactive MCQs to test yourself.
Latest articles
View all →Microbiology Laboratory Design and Layout: How a Lab Is Organized and Why
How a microbiology laboratory is laid out, the unidirectional clean-to-dirty workflow, zoning, biosafety cabinet placement, and the design principles that keep work safe and contam...
Automation in the Microbiology Laboratory: A Step-by-Step Guide to the Instruments
How each step of the microbiology workflow is automated, from media preparation to identification and susceptibility, and where standalone instruments end and full integration begi...
Running a Microbiology Laboratory: How the Whole Lab Works Together
What it takes to run a microbiology laboratory, the facility, workflow from specimen to report, safety, equipment, and the quality system that governs it all, with a guide to each...
Laboratory Accreditation in Microbiology: ISO 15189, NABL, and What It Means
What laboratory accreditation is, how it differs from certification, what ISO 15189 requires, and how a microbiology laboratory achieves and maintains accreditation through bodies...
Paracoccidioides brasiliensis: Mariner's Wheel, Pathogenesis, and Lab Diagnosis
Paracoccidioides brasiliensis causes paracoccidioidomycosis (South American blastomycosis). Its tissue yeast forms the diagnostic "mariner's wheel" of multiple peripheral buds. Mor...
Coccidioides (Valley Fever): Spherules, Arthroconidia, and Lab Diagnosis
Coccidioides causes Valley fever. In tissue it forms a spherule packed with endospores, not a yeast, and in the environment it makes infectious arthroconidia. Its morphology, why i...
Nucleic Acid Amplification Tests (NAAT): Principle, Types, and Interpretatio
What NAATs are, the shared amplify-and-detect logic behind PCR, LAMP, and cartridge tests, how they compare with culture, and how to interpret a NAAT result.
Fasciolopsis buski: Life Cycle, Pathogenesis, and Laboratory Diagnosis
A clear guide to Fasciolopsis buski, the largest intestinal fluke, for medical and laboratory students: how water plants carry it to the gut, why heavy infections cause swelling an...
Humoral Immunity: Stages and Steps of the Antibody Response
Humoral immunity explained step by step: how a B cell meets antigen, gets T-cell help, and produces antibodies and memory, plus the active and passive types with examples.
Mucosal Immunity: MALT, M Cells, and How Secretory IgA Reaches the Surface
How the mucosal immune system is organized: MALT and its inductive and effector sites, M-cell antigen sampling, IgA plasma-cell homing, and the pIgR pathway that carries secretory...
Mononuclear Phagocyte System: Monocytes, Macrophages, and the Tissue Macrophages
The mononuclear phagocyte system explained: how monocytes mature into macrophages, the tissue macrophages by name and site (Kupffer cells, microglia, alveolar macrophages, osteocla...
Cyclospora cayetanensis: Life Cycle, Pathogenesis, and Laboratory Diagnosis
Why does routine stool microscopy miss Cyclospora, and why does it not spread person to person? Complete Cyclospora cayetanensis life cycle, the delayed-sporulation mechanism, trea...
Human Papillomavirus (HPV): Warts, Cervical Cancer, and the Vaccine
Human papillomavirus (HPV): how low-risk types cause genital warts and high-risk types (16, 18) cause cervical cancer through the E6 and E7 oncoproteins, plus koilocytes, HPV testi...