Biological Fluids Examination

Question 1

How do we collect CSF?

Answer 1

Lumbar puncture from the subarachnoid space

Question 2

Why must the total cell counts be estimated within 20 mins of collection?

Answer 2

The cells degenerate rapidly

Question 3

What temp do we store the CSF at long term?

Answer 3

-20 degrees

Question 4

What are the indications for a CSF analysis?

Answer 4

Meningitis, tumors and infections

Question 5

What are 2 contraindications of a lumbar puncture?

Answer 5

Raised intracranial pressure or a brain tumor

Question 6

We split the CSF into how many tubes?

Answer 6

3

Question 7

What does red CSF fluid mean?

Answer 7

Intracranial hemorrhage

Question 8

If the red CSF turns yellow after centrifugation, what does that mean?

Answer 8

Xanthochromia

Question 9

Causes of the yellow xanthochromia colour?

Answer 9

High protein content

Question 10

The normal protein content in CSF is?

Answer 10

15-45mg/dl

Question 11

What are causes of increased CSF proteins?

Answer 11

Meningitis, subarachnoid hemorrhage

Question 12

What causes decreased chloride in CSF?

Answer 12

Meningitis