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Serum/Plasma Mass Concentration of Salmeterol

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

This test measures the amount of salmeterol, a long-acting beta-agonist medication, in your blood. Salmeterol is used to manage symptoms of asthma or chronic obstructive pulmonary disease (COPD).

Quick summary

["Your doctor may order this test to check if your salmeterol dose is working properly or to monitor for potential side effects."]

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

Key facts at a glance

LOINC
26849-0
Short code
SIgA Sal-mCnc
Synonyms
SIgA Sal-mCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
82784
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 might recommend this test if you’re taking salmeterol as part of your asthma or COPD treatment plan. They may also order it to assess how well your medication is affecting your breathing or to check for unusual levels that could indicate issues like overuse or drug interactions.

What to Expect Before the Test

No special preparation is needed for this test. You’ll likely have a blood sample drawn from a vein in your arm, similar to other routine blood tests. If you’re on salmeterol, it’s best to discuss timing with your provider to ensure accurate results.

What the Test Results Mean

Salmeterol levels help determine if your medication is within the therapeutic range. Too little may mean your symptoms aren’t controlled, while too much could signal side effects or improper dosing. Your provider will interpret results based on your medical history and treatment goals.

Possible Side Effects or Considerations

Salmeterol is generally safe when used as directed, but high levels in the blood could be linked to side effects like shakiness, rapid heartbeat, or difficulty breathing. If you experience these symptoms, contact your doctor immediately.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Salmeterol Level

Frequently asked questions

What causes salmeterol levels to be checked?
Salmeterol levels are checked to verify proper dosing, assess medication effectiveness, or investigate potential issues like overuse, drug interactions, or side effects. Your provider may also order it if you’re experiencing worsening asthma or COPD symptoms despite treatment.
How long does it take to get results?
Results from this test are typically available within 1–3 business days, depending on your lab’s processing time. Your healthcare provider will discuss the findings with you during your follow-up visit.
Can I stop taking salmeterol before the test?
No, you should not stop taking salmeterol without consulting your provider first. If you’re unsure about timing, ask your doctor whether to adjust your medication schedule before the test.
  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 16, 2026. · Read our editorial policy