Cyclosporine Blood Level (Quantitative)
This test measures the amount of cyclosporine, a medication used to prevent organ rejection after a transplant or to suppress immune responses in certain conditions, in your blood.
["Your cyclosporine level helps doctors monitor whether your dose is safe and effective."]
Key facts at a glance
- LOINC
- 55805-6
- Short code
- cycloSPORINE Bld LC/MS/MS-mCnc
- Synonyms
- cycloSPORINE Bld LC/MS/MS-mCnc
- Category
- chemistry
- Sample
- whole-blood
- Container
- Lavender-top (EDTA)
- Units
- N/A
- Ref low
- 0
- Ref high
- 100
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- lc-ms-ms
- CPT
- 83721
- SNOMED
- 113079007
- 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
Doctors order this test to ensure your cyclosporine levels stay within a target range. Too little may mean your immune system isn’t properly controlled, while too much can cause serious side effects like kidney damage or high blood pressure. This test is especially important if you’ve had an organ transplant or take this medication for autoimmune diseases.
What to Expect Before the Test
No special preparation is needed, but you may be asked to fast for a few hours before the test if your blood is drawn in the morning. Bring a list of all medications you’re taking, including cyclosporine, to your appointment.
How the Test Is Done
A healthcare provider will draw blood from a vein in your arm using a small needle. You may feel a slight pinch, but it usually doesn’t cause discomfort afterward. The blood sample is sent to a lab for analysis.
What the Results Mean
Results are typically reported as a numerical value representing the cyclosporine concentration in your blood. Your doctor will compare these results to your target range and adjust your medication dose if needed. Follow-up tests may be scheduled to monitor long-term levels.
Reference range
Optimal: <100 mg/dLN/A
Fasting for 12-14 hours preferred. Water is permitted. Avoid alcohol for 24 hours before the test.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
Cyclosporine Level
Frequently asked questions
What are the typical reference ranges for this test?
How often should I get this test?
Can I eat or drink before the 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