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24-Hour Sodium Intake Assessment

Published: August 9, 2026Updated: August 16, 2026

This test measures the total amount of sodium you consumed over a 24-hour period, helping healthcare providers evaluate your dietary sodium intake.

Quick summary

["Understanding your sodium intake supports managing blood pressure and overall kidney health."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

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

Specimen: serum

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?
A high sodium intake may contribute to elevated blood pressure or kidney stress. Your provider will review your results alongside other health factors to determine if dietary changes are needed.
How do I prepare for this test?
You’ll need to track all sodium-containing foods and beverages for 24 hours, including salt added during cooking or at the table. Bring your records to your appointment for review.
Can I still eat normally while doing this test?
Yes, but focus on recording everything you eat and drink. Avoid special diets unless instructed by your provider.
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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