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Crystals (Joint Fluid)

About This Test

Department: Microbiology, Virology and Molecular Microbiology


Aspirated joint fluid


Turnaround Time:

24 hours (not processed out of hours)

Microscopy for detection of :monosodium urate crystals calcium pyrophosphate dehydrate crystals

If microscopy for rhagocytes or hydroxyapatite crystals required, please state on request as this is not performed routinely and will be referred

Other Comments:

Collection container: Sterile plain container (If a cell count is required a paediatric lithium heparin bottle should be taken also)

Special instructions - Relevant clinical data and details of recent or current antimicrobial treatment should be provided:

Specimen transport: If processing is delayed, refrigeration is preferable to storage at ambient temperature

Reference laboratory for rhagocytes or hydroxyapatite crystals: Manchester Royal Infimary Cytology Department