24-Hour Sodium Intake Assessment
This test measures the total amount of sodium you consumed over a 24-hour period, helping healthcare providers evaluate your dietary sodium intake.
["Understanding your sodium intake supports managing blood pressure and overall kidney health."]
Key facts at a glance
- LOINC
- 9090-2
- Short code
- Sodium intake 10h
- Synonyms
- Sodium intake 10h
- 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
Why This Test Matters for Your Health
Sodium is a mineral essential for balancing fluids and maintaining nerve and muscle function. However, excessive sodium intake can contribute to high blood pressure, which may increase the risk of heart disease or stroke. This test helps identify if your diet is too high or too low in sodium, guiding dietary adjustments if needed.
What to Expect During the Test
You’ll be asked to track and record all sodium-containing foods and beverages you consume for a full day, including salt added during cooking or at the table. A healthcare provider or dietitian will review your intake to determine your sodium consumption level.
How the Test Results Are Used
Your results will be compared to general dietary guidelines to assess whether your sodium intake is within recommended limits. If your intake is too high, your provider may recommend reducing sodium-rich foods (like processed snacks, canned soups, or deli meats). If it’s too low, they may suggest including more salted foods or consulting a dietitian for personalized advice.
Common Causes of Abnormal Results
High sodium intake may result from eating heavily processed foods, using too much table salt, or consuming high-sodium condiments. Low sodium intake could stem from avoiding salty foods or following a very low-sodium diet without medical supervision.
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.
◆Associated findings1
Short name
Sodium Intake (24h)
Frequently asked questions
What does a high sodium intake mean for my health?
How do I prepare for this test?
Can I still eat normally while doing 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