title: [The test of the synovial fluid in microcrystalline joint diseases].
abstract: The search for crystals in the synovial fluid must be carried out promptly and is very helpful in the diagnosis of microcrystalline arthropathy. If at light microscopy the fluid is negative for crystals and negative or weakly positive for alizarin red, and if the diagnosis is nevertheless suspected, analysis of the centrifuged fluid sediment facilitates the identification of crystals and increases the specificity of alizarin red (the specific stain for crystals) in the identification of apatite crystal deposits. Electronmicroscopy can the be used to confirm the presence or absence of crystals.
authors.affiliation: Laboratoire d'histopathologie synoviale, Centre Viggo-Petersen, hôpital Lariboisière, Paris.
authors.forename: E
authors.initials: E
authors.lastname: Ortiz-Bravo
mesh_terms: D001031:Apatites / Q000032:analysis; D001168:Arthritis / Q000175:diagnosis / Q000473:pathology; D001170:Arthritis, Infectious / Q000175:diagnosis / Q000473:pathology; D001172:Arthritis, Rheumatoid / Q000175:diagnosis / Q000473:pathology; D002131:Calcium Pyrophosphate / Q000032:analysis; D003460:Crystallization; D003937:Diagnosis, Differential; D006801:Humans; D007592:Joint Diseases / Q000175:diagnosis / Q000473:pathology*; D008853:Microscopy / Q000379:methods; D013582:Synovial Fluid / Q000737:chemistry*; D014527:Uric Acid / Q000032:analysis
chemical_list: D001031:Apatites; D014527:Uric Acid; D002131:Calcium Pyrophosphate
vernacular_title: Examen du liquide articulaire dans les arthropathies microcristallines.