|Alternate:||CSF; LP; Subdural Fluid; Spinal Fluid; Ventricular Fluid; Shunt|
|Includes:||Color, turbidity, cells per mm3, WBC differential|
|Available:||Daily, 24 hours|
|Specimen:||Cerebrospinal fluid- site specific i.e. LP, ventricular, shunt, subdural|
|Volume:||1.0 mL on each of 3 to 4 CSF collection tubes|
|Container:||CSF collections tubes or other suitable sterile container|
|Temperature:||Do not store. Do not refrigerate. Do not transport via tube system. Deliver to Hematology within 30 minutes and verify delivery with someone in the department.|
|Rejection:||Clotted or refrigerated specimen. Specimens contaminated with bone marrow.|
|Normal:||Colorless and clear. Neonates 0-30 mononuclear cells/mm3. Children <20 mononuclear cells/mm3. Adolescence <10 mononuclear cells/mm3. Adults <5 mononuclear cells/mm3. RBC's in all age groups 0 cells/mm3. (Any cells may have significance).|
|Uses:||Diagnosis of primary meningeal infections, intracranial bleeds, subdural hemorrhage, subarachnoid hemorrhage, CNS malignancies, shunt infections and other CNS pathologic conditions.|
|Limitations:||A traumatic (bloody) tap or specimens contaminated with bone marrow may make interpretation difficult. Specimens delivered to the laboratory mote than 30 minutes post collection may experience WBC lysis.|
|Method:||Microscopic stained, hemocytometry|
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