| Laboratory: | Clinical Biochemistry | ||||
| Test Name: |
SODIUM - (U)
Test Code:
NAU
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| Clinical Information: |
Sodium is the primary extracellular cation and functions to maintain fluid distribution and osmotic pressure. Measurement of urine sodium is important for the assessment of acid-base balance, water balance and dehydration.
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| Collection Devices: |
Collect 24h urine without preservative. Refrigerate 24h and random urine specimens until analysis.
Similar lab approved leak-proof containers acceptable. |
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| Specimen Required: |
Urine: 3.0 mL
Stability 7 days refrigerated, 6 months frozen |
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| Referral: | |||||
| Requisition: | |||||
| Reference Values: |
40 - 200 mmol/d
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| Availability: |
Stat or Routine
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| See Also: | |||||
| More Information: |