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Cyclosporine concentration (mass concentration in blood)

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. It helps your healthcare provider monitor your dose to ensure it’s effective and safe.

Quick summary

["Your cyclosporine level helps balance treatment and side effects."]

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

Key facts at a glance

LOINC
77167-5
Short code
cycloSPORINE 3h p Bld-mCnc
Synonyms
cycloSPORINE 3h p Bld-mCnc
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why Is This Test Done?

Your doctor may order this test if you’re taking cyclosporine to manage conditions like organ transplants, autoimmune diseases, or severe allergies. Regular monitoring helps prevent too much or too little medication, which can affect your health.

What to Expect Before the Test

No special preparation is needed unless instructed by your doctor. You may have a small needle inserted into your arm or vein to draw blood. If you’re on cyclosporine, your blood sample will be taken at a time that matches your usual dosing schedule.

What the Test Results Mean

Results are compared to a general reference range to guide your treatment. Low levels may mean your dose isn’t working, while high levels could indicate side effects or improper dosing. Your doctor will discuss these findings with you.

Common Side Effects to Watch For

Cyclosporine can cause side effects like kidney problems, high blood pressure, or increased risk of infections. If you notice unusual fatigue, swelling, or skin changes, report them to your doctor.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

This test is critical for adjusting your medication to avoid complications. Low levels may require a higher dose, while high levels may prompt dose reduction or alternative treatments. Always follow your healthcare provider’s guidance.

Short name

Cyclosporine Blood Level

Frequently asked questions

Why is my cyclosporine level checked regularly?
Regular checks ensure your dose stays within the safest range for your condition. This helps prevent organ damage, infections, or other side effects while keeping your treatment effective.
What happens if my cyclosporine level is too high?
A high level may mean you’re at risk for side effects like kidney issues or increased infection risk. Your doctor will adjust your dose or monitor you closely until levels return to a safer range.
Can I eat or drink before this test?
You can eat and drink normally unless your doctor specifies otherwise. Avoid alcohol or certain foods that might affect lab results, but always follow your healthcare provider’s instructions.
  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