Body Fluids Flashcards
Site where CSF circulate
📍arachnoid space of the meninges of the brain and spinal cord
Site of reabsorption of CSF
Arachnoid granules of the brain
Blood brain barrier that protect the brain
Tight fitting endothelial cells in the choroid plexus
CSF Tube #1
Clinical Chemistry/Immunology (less affected by bacterial contamination from spinal tap)
CSF Tube #2
Microbiology
CSF Tube #3
Hematology (less cell contamination)
CSF Tube #4 (four tube distribution)
Hematology (In comparison with tube one for possible outside interference from the tap)
CSF Tube #1 (four tube distrib)
Hematology (in comparison with cell from puncture with cells in the 4th tube)
Tube #2 (four tube distrib)
Clinical Chem
Tube #3 (4TD)
Microbiology
Allowable hour/s to stand the CSF
1hr
Adult CSF WBC count for adults
0-5 /muL
T or F: Babies have slightly lower counts and less monocytes in CSF
False: Babies have slightly higher WBC count and more monocyte
CSF counting is performed by:
Using Neubauer counting chamber
Formula for CSF counting
of cells counted x dilution / # of sq. counter x vol of 1 sq.
Reagent use to lyse RBC in CSF
Percent glacial acetic acid
To ensure adequate number of cells for evaluation
Concentration by cytocentrifugation
Normal value of CSF Protein
15-45 mg/dL
Protein found ONLY in CSF
t Transferrin
Clinical significance: Elevated CSF
Damage to the bbb, multiple sclerosis
Clinical significance: Decreased CSF
CSF Leakage and trauma
Detects damage to the BBB.
CSF serum/albumin index
Formula of CSF serum/albumin
CSF Albumin (mg/dL) / Serum Albumin (mg/dL)
Normal value of CSF IgG index
0.70 or lower