In synovial fluid analysis, what does the string test assess?

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Multiple Choice

In synovial fluid analysis, what does the string test assess?

The string test evaluates the viscosity of synovial fluid. By pulling a drop between your fingers to form a thread, you gauge how thick and cohesive the fluid is. Higher viscosity yields a longer, continuous string, while lower viscosity produces little to no string. Normal synovial fluid is very viscous due to its hyaluronic acid and mucopolysaccharides content, but in inflammatory or septic conditions the fluid becomes less viscous as these macromolecules are diluted or degraded. This test specifically measures viscosity, not crystals, temperature, or pH, which are assessed by other methods.

The string test evaluates the viscosity of synovial fluid. By pulling a drop between your fingers to form a thread, you gauge how thick and cohesive the fluid is. Higher viscosity yields a longer, continuous string, while lower viscosity produces little to no string. Normal synovial fluid is very viscous due to its hyaluronic acid and mucopolysaccharides content, but in inflammatory or septic conditions the fluid becomes less viscous as these macromolecules are diluted or degraded. This test specifically measures viscosity, not crystals, temperature, or pH, which are assessed by other methods.

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