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Cyclosporine in Blood (Mass Concentration)

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

This test measures the amount of cyclosporine, a medication used to prevent organ rejection after a transplant or to treat certain autoimmune conditions, in your blood.

Quick summary

["Your cyclosporine level helps doctors monitor whether your dose is safe and effective."]

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

Key facts at a glance

LOINC
45058-5
Short code
cycloSPORINE Moncl+Polycl Pnl Bld-mCnc
Synonyms
cycloSPORINE Moncl+Polycl Pnl Bld-mCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
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 Matters

Cyclosporine is a powerful medication that works by suppressing your immune system. Too much or too little can cause serious health problems. Regular blood tests like this help ensure your dose stays within the right range for your condition.

What to Expect Before the Test

No special preparation is needed for this test. You may have a small needle inserted into your arm or vein to draw blood. It usually takes a few minutes, and you can resume normal activities afterward.

How the Results Are Used

Your healthcare provider will use these results to adjust your cyclosporine dose if needed. They may also check other lab tests to ensure your body is responding well to the medication.

Common Reasons for This Test

Doctors order this test when you’re on cyclosporine therapy to check if your levels are within the target range. It’s often done regularly, especially after a transplant or if you have a condition requiring long-term immunosuppression.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Cyclosporine Level

Frequently asked questions

Too high levels of cyclosporine can cause kidney damage, high blood pressure, or increased risk of infections. Too low levels may mean your immune system isn’t being properly suppressed, increasing the risk of organ rejection or infections.
This test helps doctors balance the need to control your immune system while minimizing side effects. If your results are outside the recommended range, your doctor may adjust your medication or monitor you more closely.
What does a normal or abnormal result mean?
Normal results typically fall within a specific range set by your doctor based on your condition and treatment plan. If your result is too high or too low, it may indicate your dose needs adjustment. Always discuss results with your healthcare provider.
How often will I need this test?
The frequency depends on your treatment plan. After a transplant, tests may be done weekly or monthly. If you’re on cyclosporine for another reason, your doctor may schedule tests every few weeks or months to monitor your levels.
  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