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Table 21 Reference ranges of proteins for detection of CSF fistula

From: S1 guidelines “lumbar puncture and cerebrospinal fluid analysis” (abridged and translated version)

Parameter Reference range Remarks
Beta-Trace Protein (mg/l) Serum: 0.3–0.9
CSF: 8.9–29.2
Cut-off: 1.1
Cave: renal insufficiency, endolymph fistula
Beta2-Transferrin Qualitative detection Cave: blood contamination