https://wikem.org/w/index.php?action=history&feed=atom&title=CSF_analysis 2026-04-17T16:01:31Z Revision history for this page on the wiki MediaWiki 1.38.2 https://wikem.org/w/index.php?title=CSF_analysis&diff=388782&oldid=prev 2026-03-22T06:58:15Z

<p>Create lab page for CSF analysis with EM-focused content and references</p> <p><b>New page</b></p><div>==Background==<br /> *Analysis of cerebrospinal fluid obtained via [[lumbar puncture]]<br /> *Essential for evaluation of [[Meningitis|meningitis]], [[Subarachnoid hemorrhage|subarachnoid hemorrhage]], and other CNS pathology<br /> <br /> ==Normal Values==<br /> *Opening pressure: 10-20 cm H2O<br /> *WBC: 0-5 cells/mcL (all lymphocytes)<br /> *RBC: 0<br /> *Glucose: 40-70 mg/dL (&gt;60% of serum glucose)<br /> *Protein: 15-45 mg/dL<br /> *Gram stain: no organisms<br /> <br /> ==Interpretation==<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> | || WBC || Predominance || Glucose || Protein<br /> |-<br /> | Bacterial meningitis || 1,000-5,000+ || Neutrophils || Low (&lt;40) || High (&gt;200)<br /> |-<br /> | Viral meningitis || 10-500 || Lymphocytes || Normal || Mildly elevated<br /> |-<br /> | TB/Fungal || 10-500 || Lymphocytes || Low || High<br /> |-<br /> | SAH || Elevated RBCs || - || Normal || Elevated<br /> |}<br /> *Traumatic tap: RBC count decreases from tube 1 to tube 4; true SAH has consistent RBCs across tubes<br /> *Xanthochromia (yellow CSF): suggests SAH; appears &gt;6-12 hours after hemorrhage<br /> <br /> ==See Also==<br /> *[[Lumbar puncture]]<br /> *[[Meningitis]]<br /> *[[Subarachnoid hemorrhage]]<br /> *[[Encephalitis]]<br /> <br /> ==References==<br /> &lt;references/&gt;<br /> <br /> [[Category:Labs]]</div>

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