Skip to content

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 immune responses, in your blood.

Quick summary

["Your cyclosporine level helps doctors monitor how well your body is responding to this medication."]

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

Key facts at a glance

LOINC
77169-1
Short code
cycloSPORINE 1h p Bld-mCnc
Synonyms
cycloSPORINE 1h 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 This Test Is Done

Your healthcare provider may order this test if you’re taking cyclosporine to manage conditions like organ transplants, autoimmune diseases, or severe allergies. Regular monitoring helps ensure the medication is at the right level to work safely without causing side effects.

What to Expect Before the Test

No special preparation is needed. You may have a small needle inserted into your arm or vein to draw blood. If you’re on cyclosporine, your provider will confirm the timing (often 1–2 hours after dosing) to get the most accurate result.

What the Results Mean

Results are compared to a target range set by your doctor based on your condition and response to treatment. Too high or too low levels can affect how well the medication works or increase side effects.

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 changes in vision, report them to your provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Cyclosporine levels are critical for balancing immune suppression and organ protection. Low levels may mean the medication isn’t working enough, while high levels can strain organs or increase infection risk. Your provider will adjust your dose based on these results.

Short name

Cyclosporine Level

Frequently asked questions

Why do I need this test regularly?
Regular testing ensures your cyclosporine stays within the safest and most effective range for your condition. It helps prevent side effects and ensures your treatment works as intended.
What if my results are outside the target range?
If your level is too high or too low, your doctor may adjust your dose, change your medication schedule, or monitor you more closely. Never change your dose without talking to them first.
Can I eat or drink before this test?
You can eat and drink normally unless your provider specifies otherwise. Some medications (like grapefruit juice) can affect cyclosporine levels, so check with your doctor if you’re unsure.
  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