Reference ranges |
---|
In: |
Following is a list of reference ranges for cerebrospinal fluid:
Substance | Lower limit | Upper limit | Unit | Corresponds to % of that in plasma[ clarification needed] |
---|---|---|---|---|
Osmolality | 280 [1] | 300 [1] | mmol/L | |
Sodium | 135 [1] | 150 [1] | mmol/L | |
Potassium | 2.6 [1] | 3.0 [1] | mmol/L | |
Chloride | 115 [1] | 130 [1] | mmol/L | >100% [1] |
Calcium | 1.00 [1] | 1.40 [1] | mmol/L | ~50% [1] |
Magnesium | 1.2 [1] | 1.5 [1] | mmol/L | >100% [1] |
Iron | 0.2 [1] | 0.4 [1] | μmol/L |
Substance | Lower limit | Upper limit | Unit | Corresponds to % of that in plasma |
---|---|---|---|---|
Glucose | 50 [2] | 80 [2] | mg/dL | ~60% [1] |
2.2, [3] 2.8 [1] | 3.9, [3] 4.4 [1] | mmol/L | ||
Protein | 15 [1] [2] | 40, [4] 45 [1] [2] | mg/dL | ~1% [1] |
Albumin | 7.8 [5] | 40 [5] | mg/dL | 0
[6] - 0.7%
[6] - corresponding to an albumin (CSF/serum) quotient of 0 to 7x10−3 |
Lactate | 1.1 [1] | 2.4 [1] | mmol/L | |
Creatinine | 50 [1] | 110 [1] | μmol/L | |
Phosphorus | 0.4 [1] | 0.6 [1] | μmol/L | |
Urea | 3.0 [1] | 6.5 [1] | mmol/L | |
Carbon dioxide | 20 [1] | 25 [1] | mmol/L |
Substance | Lower limit | Upper limit | Unit | Corresponds to % of that in blood plasma |
---|---|---|---|---|
RBCs | n/a [2] | 0 [2] / negative | cells/μL or cells/mm3 | |
WBCs | 0 [2] | 3 [2] | cells/μL cells/mm3 | |
pH | 7.28 [1] | 7.32 [1] | (-log M) | |
PCO2 | 44 [1] | 50 [1] | mmHg | |
5.9 [7] | 6.7 [7] | kPa | ||
PO2 | 40 [1] | 44 [1] | mmHg | |
5.3 [7] | 5.9 [7] | kPa |
Reference ranges |
---|
In: |
Following is a list of reference ranges for cerebrospinal fluid:
Substance | Lower limit | Upper limit | Unit | Corresponds to % of that in plasma[ clarification needed] |
---|---|---|---|---|
Osmolality | 280 [1] | 300 [1] | mmol/L | |
Sodium | 135 [1] | 150 [1] | mmol/L | |
Potassium | 2.6 [1] | 3.0 [1] | mmol/L | |
Chloride | 115 [1] | 130 [1] | mmol/L | >100% [1] |
Calcium | 1.00 [1] | 1.40 [1] | mmol/L | ~50% [1] |
Magnesium | 1.2 [1] | 1.5 [1] | mmol/L | >100% [1] |
Iron | 0.2 [1] | 0.4 [1] | μmol/L |
Substance | Lower limit | Upper limit | Unit | Corresponds to % of that in plasma |
---|---|---|---|---|
Glucose | 50 [2] | 80 [2] | mg/dL | ~60% [1] |
2.2, [3] 2.8 [1] | 3.9, [3] 4.4 [1] | mmol/L | ||
Protein | 15 [1] [2] | 40, [4] 45 [1] [2] | mg/dL | ~1% [1] |
Albumin | 7.8 [5] | 40 [5] | mg/dL | 0
[6] - 0.7%
[6] - corresponding to an albumin (CSF/serum) quotient of 0 to 7x10−3 |
Lactate | 1.1 [1] | 2.4 [1] | mmol/L | |
Creatinine | 50 [1] | 110 [1] | μmol/L | |
Phosphorus | 0.4 [1] | 0.6 [1] | μmol/L | |
Urea | 3.0 [1] | 6.5 [1] | mmol/L | |
Carbon dioxide | 20 [1] | 25 [1] | mmol/L |
Substance | Lower limit | Upper limit | Unit | Corresponds to % of that in blood plasma |
---|---|---|---|---|
RBCs | n/a [2] | 0 [2] / negative | cells/μL or cells/mm3 | |
WBCs | 0 [2] | 3 [2] | cells/μL cells/mm3 | |
pH | 7.28 [1] | 7.32 [1] | (-log M) | |
PCO2 | 44 [1] | 50 [1] | mmHg | |
5.9 [7] | 6.7 [7] | kPa | ||
PO2 | 40 [1] | 44 [1] | mmHg | |
5.3 [7] | 5.9 [7] | kPa |