Usefulness of β2-transferrin assay in the detection of cerebrospinal fluid leaks following head injury

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Abstract
✓ The clinical value of analyzing various fluids and exudates for β2-transferrin (β2-Tfn) to detect cerebrospinal fluid (CSF) leakage following head trauma was reviewed in a series of 11 cases. Qualitative detection of β2-Tfn was performed by agarose gel electrophoresis of tears, ear and nose exudates, cerebral cyst fluid, and wound discharge fluid in different cases. In each instance the presence of β2-Tfn in the analyzed fluid supported the diagnosis of a CSF leak. Equally, the demonstration of the absence of β2-Tfn in the fluid excluded the diagnosis of such a leak. Neither false-positive nor false-negative results were found, as indicated by separate radiological investigations and/or subsequent clinical assessment of patients. The detection of β2-Tfn in suspect fluids thus provides a highly sensitive and selective, rapid, and noninvasive test for the detection of CSF leakage in cases of head trauma.

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