Cyclosporine concentration (mass concentration) measured 12 hours post-dose via serum/plasma
This test checks how much cyclosporine is in your blood 12 hours after taking your medication. It helps doctors monitor your dose to ensure it’s working properly and to avoid side effects.
["This test helps adjust your medication to balance effectiveness and safety."]
Key facts at a glance
- LOINC
- 3524-6
- Short code
- cycloSPORINE 12h p Ser-mCnc
- Synonyms
- cycloSPORINE 12h p Ser-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 Is Done
Doctors order this test if you’re taking cyclosporine—a medication often used to prevent organ rejection after a transplant or to treat certain autoimmune conditions. It helps track whether your dose is keeping your immune system under control without causing too much suppression.
What to Expect Before the Test
No special preparation is needed, but you may be asked to fast for a few hours before the blood draw if instructed by your healthcare provider. Bring a list of all medications you’re taking, including cyclosporine.
What the Test Results Mean
Results are compared to a target range set by your doctor based on your condition and response to treatment. Too little cyclosporine may mean your immune system isn’t suppressed enough, while too much could increase side effects like kidney problems or infections.
Common Side Effects to Watch For
If your levels are too high, you might experience nausea, headaches, or kidney issues. If too low, you could be at risk for organ rejection or infections. Always discuss symptoms with your doctor.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test is critical for managing cyclosporine therapy. Low levels may indicate insufficient dosing, while high levels may require dose adjustments to prevent toxicity. Regular monitoring helps tailor treatment to your needs and reduces risks.
Short name
Cyclosporine 12-hour post-dose level
Frequently asked questions
Why was I asked to have this test done?
What does a ‘target range’ mean on my results?
Can I eat or drink before this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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