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Salicylate concentration in serum/plasma

Published: August 9, 2026Updated: August 17, 2026

This test measures the amount of salicylate (aspirin) in your blood, which can help assess exposure to aspirin or other salicate-containing medications.

Quick summary

["Salicylate levels help monitor aspirin overdose or toxicity."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
35597-4
Short code
Salicylates SerPl Scn-mCnc
Synonyms
Salicylates SerPl Scn-mCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Critical range
— – 50 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
screen
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 Is Done

Your healthcare provider may order this test if you’ve taken high doses of aspirin or salicate-containing drugs, experienced symptoms like nausea, ringing in the ears, or confusion, or if you’re being treated for conditions like rheumatoid arthritis or gout where salicate use is common.

What to Expect Before the Test

No special preparation is needed. You’ll typically provide a blood sample drawn from a vein in your arm. If you’re on salicate medications, let your provider know before the test to ensure accurate results.

What the Results Mean

Salicylate levels above normal can indicate toxicity, while lower-than-expected levels may suggest poor absorption or medication errors. Your provider will interpret results in the context of your symptoms and medical history.

Common Causes of Abnormal Results

High levels may result from accidental overdose, intentional misuse, or certain medical conditions. Low levels could occur if you missed doses or have a rare metabolic issue affecting salicate processing.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Elevated salicylate levels can disrupt normal bodily functions, including acid-base balance, kidney function, and blood clotting. Severe toxicity may require immediate medical attention, especially in children or those with pre-existing health conditions.

Short name

Salicylate Level

Frequently asked questions

How often should I get this test?
Your provider will determine the frequency based on your treatment plan, symptoms, and medication use. Regular monitoring may be needed if you’re on long-term salicate therapy.
What symptoms might indicate salicylate toxicity?
Symptoms of toxicity can include nausea, vomiting, ringing in the ears (tinnitus), headache, confusion, or difficulty breathing. Seek medical help right away if you experience these or other concerning symptoms.
Can diet or other medications affect salicylate levels?
Dietary salicates (e.g., from certain fruits or herbs) may contribute to elevated levels, but they’re less likely to cause toxicity than pharmaceutical salicates. Always discuss all medications, supplements, and dietary changes with your provider.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

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 17, 2026. · Read our editorial policy