🩸 Heparin-Induced Thrombocytopenia (HIT): Complete Review 🩸 Heparin-Induced Thrombocytopenia (HIT): Complete Review — Test Purpose · CLIA Principle · Interpretation Tips · Related Conditions Heparin-Induced Thrombocytopenia (HIT) is a serious immune-mediated complication that causes thrombocytopenia and thrombosis after exposure to heparin. Not all decreases in platelet count represent HIT; therefore, confirming the presence of PF4–Heparin…
🩸 FDP (Fibrin/Fibrinogen Degradation Products) — Complete Guide 🩸 FDP (Fibrin/Fibrinogen Degradation Products) — Complete Guide A key biomarker reflecting fibrin formation, fibrinolysis, and fibrinogen degradation, widely used in evaluating DIC, hyperfibrinolysis, and thrombotic/bleeding disorders. 1. What Are FDPs? FDPs (Fibrin/Fibrinogen Degradation Products) are fragments produced when fibrinogen or fibrin undergoes degradation by plasmin. Therefore,…
🩸 D-dimer Test: Complete Medical Review 🩸 D-dimer Test: Complete Medical Review Key Marker of Thrombosis & Fibrinolysis · Widely Used in ER, Internal Medicine, and Obstetrics 1. What Is D-dimer? D-dimer is the final degradation product of cross-linked fibrin formed when plasmin breaks down a fibrin clot.It increases only when a fibrin clot has…
Anti-Xa (LMWH/Heparin) Test: Complete Guide Monitoring Anticoagulant Therapy with Low-Molecular-Weight and Unfractionated Heparin The Anti-Factor Xa (Anti-Xa) assay measures the degree of Factor Xa inhibition in plasma, providing a direct assessment of the anticoagulant effect of heparin therapy. Unlike activated partial thromboplastin time (aPTT), which has limitations and variability, the Anti-Xa assay is considered a…
🩸 Antithrombin III (AT III) Test: Purpose, Method, Reference Range, and Clinical Significance Antithrombin III (AT III) is one of the most important natural anticoagulant proteins in the human body. It plays a crucial role in preventing excessive blood clot formation by inhibiting several coagulation factors. The Antithrombin III test measures the activity of this…
🧪 β-Lipoprotein Test: Complete Guide Lipid Metabolism · Atherosclerosis Risk · TIA Method · Reference Range β-Lipoprotein represents the lipoproteins that migrate in the beta fraction on serum electrophoresis, corresponding primarily to LDL (Low-density lipoprotein).It is a major carrier of cholesterol in the bloodstream and has long been used as an indicator of cardiovascular risk….
🧪 Pancreatic Amylase Test: Complete Guide Key Enzyme for Acute Pancreatitis · Enzymatic Assay · Reference Range · Clinical Interpretation Pancreatic amylase (P-AMY) is a digestive enzyme responsible for the breakdown of carbohydrates.Amylase exists in two major isoforms: Because P-AMY originates directly from the pancreas, it serves as a highly specific marker for diseases involving…
🧪 NAG (N-Acetyl-β-D-Glucosaminidase) Test: Complete Review Early Marker of Proximal Tubular Injury · Colorimetric Assay · Reference Range · Clinical Interpretation (NAG test) N-Acetyl-β-D-Glucosaminidase (NAG) is a lysosomal enzyme highly concentrated in the proximal renal tubules.Because it is barely present in blood and is excreted exclusively through urine, urinary NAG levels correlate strongly with the…
🧪 Lysozyme (Muramidase) Test — Complete Guide An Antimicrobial Enzyme Elevated in Infection, Inflammation, and Hematologic Disorders Lysozyme (muramidase) is an antibacterial enzyme that breaks down the peptidoglycan layer of bacterial cell walls. It is produced primarily by neutrophils, monocytes, macrophages, salivary glands, and lacrimal glands. Serum lysozyme levels increase in disorders involving monocyte/macrophage proliferation,…
🧫 Urine Microscopy (Urine Sediment Examination): Complete Guide Flow Cytometry + Microscopic Review in Modern Laboratory Practice Urine microscopy is an essential diagnostic tool that allows direct visualization of cells, casts, crystals, and microorganisms in urine.With the increasing use of urine flow cytometry, most laboratories now combine: This hybrid approach improves accuracy and reduces observer…
