CSF part 2 Flashcards
What type of cell count is routinely performed on CSF specimens?
leukocyte count
normal adult csf wbc
0-5 per microliter
normal newborn CSF wbc
up to 30 monometer
Performed on cytocentrifuged preparations that have been stained with Wright stain
differential count
if there is no cytocentrifuge, some laboratories make use of?
routine centrifuge
normal values for lymphocytes
29-86%
normal values of monocytes
16-56%
normal values of neutrophils
0-7%
this is done only in cases of traumatic tap
RBC count
according to Henry,
- ___ mg/dl for every __________ RBC
8, 10,000
according to Strasinger,
-____mg/dl for every ______ RBC
1, 1,200
to correct, -____ WBC for every _____ RBC’s seen
1,700
normal csf value of proteins in adults
15 mg/dL to 45 mg/dL
normal CSF value of proteins in infants
up to 150 mg/dL
what is done to confirm diagnosis of rhinorrhea and otorrhea?
TAU transferrin
normal value of CSF/serum IgG ratio
1:369
normal value of CSF IgG index
0.30-0.70
what does increased IgG indicates?
multiple sclerosis
average concentration of glucose
65%
what to find to determine MS
oligoclinical bands
this substance is normal in viral meningitis
glucose
it is a waste product of glycolysis
lactate
normal value of lactate
10-22 mg/dL
this substance is increased in tissue hypoxia
lactate
a product of ammonia
glutamine
normal value of glutamine
8-18 mg/dL
two stains for microbiology procedures
gram stain and zeihl-neelsen
Cryptococcus neoformans is best detected by
nigrosin stain or india ink
nigrosin stain or india detects?
Cryptococcus neoformans
causative agent of bacterial meningitis in ages from birth to 1 month old
Streptococcus agalactia
causative agent of bacterial meningitis in ages from 1 month to 5 yrs old
Haemophilus influenzae
causative agent of bacterial meningitis in ages from 5 to 29 yrs old
Neisseria meningitidis
causative agent of bacterial meningitis in ages from >29 yrs old
Streptococcus pneumoniae
causative agent of bacterial meningitis in ages from infants, elderly and immunocompromised
Listeria monocytogenes
recommended by the CDC for the detection of Neurosyphilis.
VDRL