Sodium concentration in dialysate fluid (measured via substance concentration method)
This test measures the sodium level in the dialysate fluid used during hemodialysis, helping ensure proper electrolyte balance during treatment.
["This test helps monitor sodium levels in your dialysis fluid to support safe and effective treatment."]
Key facts at a glance
- LOINC
- 74688-3
- Short code
- Sodium p dialysis SerPl-sCnc
- Synonyms
- Sodium p dialysis SerPl-sCnc
- Category
- electrolyte
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 136
- Ref high
- 145
- Critical range
- 120 N/A – 160 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 84295
- SNOMED
- 110741000
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What Is This Test For?
Sodium is an essential electrolyte that helps maintain fluid balance, nerve function, and muscle contractions. During hemodialysis, dialysate fluid removes waste and excess fluids from your blood. Sodium levels in this fluid must be carefully controlled to prevent complications like fluid overload or electrolyte imbalances.
Why Is This Test Important?
Your sodium concentration in the dialysate fluid is adjusted based on your overall health, kidney function, and other medications you take. Abnormal sodium levels in the dialysate can lead to symptoms such as swelling, confusion, or high blood pressure during dialysis sessions.
How Is This Test Performed?
This test involves measuring the sodium content in the dialysate fluid used during your dialysis procedure. The fluid is collected from the dialysis machine and analyzed in a lab using a specialized method to determine its sodium concentration.
What Does This Test Tell Us?
The result helps healthcare providers adjust your dialysis settings to maintain optimal sodium levels in your dialysate fluid. This ensures that your body receives the right balance of sodium while removing excess waste and fluids safely.
Reference range
Adult: 136-145 mmol/LN/A
No special preparation required. Stay well hydrated.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Frequently asked questions
How often do I need this test?
What are the normal values for this test?
Can diet affect this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy