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Reference ranges for other CSF constituents Substance Lower limit Upper limit Unit Corresponds to % of that in blood plasma; RBCs: n/a [2] 0 [2] / negative: cells/μL or cells/mm 3: WBCs: 0 [2] 3 [2] cells/μL cells/mm 3: pH: 7.28 [1] 7.32 [1] (-log M) PCO 2: 44 [1] 50 [1] mmHg 5.9 [7] 6.7 [7] kPa: PO 2: 40 [1] 44 [1] mmHg 5.3 [7] 5.9 [7] kPa
Cerebrospinal fluid (CSF) is a clear, colorless body fluid found within the tissue that surrounds the brain and spinal cord of all vertebrates. CSF is produced by specialized ependymal cells in the choroid plexus of the ventricles of the brain, and absorbed in the arachnoid granulations. In humans, there is about 125 mL of CSF at any one time ...
Under normal conditions, there are usually less than 5 white blood cells per μL of CSF. In a pleocytic setting, the number of lymphocytes can jump to more than 1,000 cells per μL. Increases in lymphocyte count are often accompanied by an increase in cerebrospinal protein concentrations in addition to pleocytosis of other types of white blood ...
All values in Hematology – red blood cells (except hemoglobin in plasma) All values in Hematology – white blood cells; Platelet count (Plt) A few values are for inside red blood cells only: Vitamin B 9 (folic acid/folate) in red blood cells; Mean corpuscular hemoglobin concentration (MCHC)
In normal infants, AFP in CSF is: [18] median 61 kIU/L (5th-95th centile: 2-889 kIU/L) in infants -69 to 31 days old; median 1.2 kIU/L (5th-95th centile: 0.1-12.5 kIU/L) in infants 32 to 110 days old; Levels of AFP in CSF decline with gestational age in proportion to levels of AFP in serum [19]
A ratio ≤0.4 is indicative of bacterial meningitis; [52] in the newborn, glucose levels in CSF are normally higher, and a ratio below 0.6 (60%) is therefore considered abnormal. [8] High levels of lactate in CSF indicate a higher likelihood of bacterial meningitis, as does a higher white blood cell count. [52]
Here's how age groups stack up on average and median 401(k) balances as of 2024: Age. Average account balance. Median account balance. 25 and younger. $7,351. $2,816. 25 to 34. $37,557. $14,933.
A cerebrospinal fluid leak (CSF leak or CSFL) ... [83] the average age for onset is 42.3 years, but onset can range from ages 22 to 61. [89] In an 11-year study ...
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