Fungal Stain- SYNOVIAL FULID
Also Known As
Test Parameters Included
- Fungal Elements Identified by Microscopy (yeast, hyphae, pseudohyphae) - semi-quantitative reporting
- Pathologist Microbiology Remark - correlated with clinical presentation of septic arthritis
Department
Methodology
Sample Required
Preparation
Schedule Report
24 Hours
Emergency Report
Yes
Frequently Asked Questions
What does a fungal stain of synovial fluid detect?
It identifies fungal elements such as yeast cells, pseudohyphae, or true hyphae in joint fluid, helping diagnose fungal septic arthritis caused by organisms like Candida or Cryptococcus.
Why is this test performed on synovial fluid?
Fungal arthritis is rare but serious, often affecting immunocompromised patients or those with prosthetic joints. Synovial fluid analysis is the fastest way to detect the organism.
How is the sample collected?
Synovial fluid is obtained via arthrocentesis (joint aspiration) by a physician using a sterile needle, typically from the knee, shoulder, or other affected joint.
What staining methods are used?
KOH (potassium hydroxide) mount and Gram stain are commonly used. KOH clears cellular debris while Gram stain highlights fungal cell walls for microscopic identification.
How long does it take to get results?
Microscopy results are available within 24 hours. If culture is also requested, final identification may take 3–7 days depending on the organism.
Can a negative fungal stain rule out fungal arthritis?
Not entirely. Sensitivity of direct microscopy is moderate, so a negative result does not exclude infection. Culture and clinical correlation are recommended for definitive diagnosis.
Test Description
Test Code
F43SF
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