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Salicylate Level (Mass Concentration in Serum/Plasma)

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

This test measures the amount of salicylate, a compound found in aspirin and some other medications, in your blood.

Quick summary

["Knowing your salicylate level helps doctors monitor medication safety and side effects."]

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

Key facts at a glance

LOINC
29227-6
Short code
Salicylates Fld-mCnc
Synonyms
Salicylates Fld-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
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’re taking aspirin or other salicylate-containing medications. It helps check for safe levels to prevent overdose or toxicity, especially in children, older adults, or those with kidney issues.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample, usually drawn from a vein in your arm. If you’re on aspirin or other salicylates, tell your doctor before the test.

What the Results Mean

Salicylate levels vary based on dose, time since last dose, and individual metabolism. High levels may cause nausea, ringing in ears, or confusion. Very high levels can be dangerous and require immediate medical attention.

Possible Side Effects or Risks

Risks are minimal, but rare complications include bruising, mild pain at the needle site, or infection. If you’re pregnant, have liver or kidney problems, or take other medications, discuss this with your doctor first.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Salicylate Level

Frequently asked questions

How long does it take to get results?
Results are typically available within 1–2 business days, depending on your lab. Follow-up may be needed if levels are outside expected ranges.
Can I take aspirin before the test?
If your doctor prescribed it, you may take your usual dose, but avoid extra aspirin unless instructed. If you’re unsure, ask your provider.
What if my level is too high?
If levels are dangerously high, seek emergency care immediately. Your doctor may adjust your dose or monitor you closely until levels return to a safe range.
  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