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Cyclosporine in Serum (Mass Concentration)

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

This test measures the amount of cyclosporine, a medication used to prevent organ rejection or suppress the immune system, in your blood.

Quick summary

["Cyclosporine levels help doctors monitor your dose and ensure it’s working safely."]

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

Key facts at a glance

LOINC
17807-9
Short code
cycloSPORINE Fld-mCnc
Synonyms
cycloSPORINE Fld-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 Is This Test Done?

Your healthcare provider may order this test if you’re taking cyclosporine to manage conditions like organ transplants, autoimmune diseases, or severe allergies. It helps track whether your dose is appropriate and if your body is processing the medication correctly.

What to Expect Before the Test

No special preparation is needed. You’ll have a small needle inserted into your arm or vein to draw blood. It usually takes a few minutes, and you may feel a brief pinch. If you’re on cyclosporine, your provider may schedule this test regularly to check your levels.

What the Results Mean

Results show the concentration of cyclosporine in your blood. While reference ranges vary by lab and patient, low levels may mean your dose isn’t high enough, while high levels could indicate side effects or improper absorption. Your provider will interpret results in the context of your medical history and treatment plan.

Potential Side Effects or Considerations

Cyclosporine can cause side effects like kidney problems, high blood pressure, or increased risk of infections. Regular monitoring helps balance its benefits and risks. If you notice unusual symptoms (e.g., nausea, swelling, or vision changes), report them to your provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Cyclosporine Level

Frequently asked questions

When should I ask my doctor about this test result?
Ask your doctor if your cyclosporine level is within the target range for your condition. They’ll consider your symptoms, other medications, and lab results to adjust your treatment if needed.
Can I eat or drink before this blood test?
You can eat and drink normally unless your provider specifies otherwise. Some tests require fasting, but this one does not.
How often will I need this test?
Your provider will determine the schedule based on your treatment plan. It may be done weekly, monthly, or as needed to optimize your dose and safety.
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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