Cyclosporine C2 Test: Booking, Price, and Results
About Cyclosporine C2 Test: Booking, Price, and Results
| Field | Value |
|---|---|
| Also Known As | Cyclosporin C2, cyclosporine A C2, CsA C2, CSA peak level, cyclosporine 2-hour post-dose level |
| Sample Type | Whole blood (collected in an EDTA tube) |
| Fasting Required | No fasting required; however, the sample must be collected exactly 2 hours after taking the cyclosporine dose. |
| Report Time | 5 days |
| Recommended For | Adults and children of any gender who are receiving cyclosporine therapy, particularly post-organ transplant recipients. |
| Price | Starting at ₹2,600 |
What is a Cyclosporine C2 Test?
The cyclosporine C2 test measures the level of cyclosporine (an immunosuppressant drug) in the blood, exactly 2 hours after a dose is taken. This 2-hour point represents peak drug absorption, making it a precise way to monitor how much of the medication is active in the body. Also called the cyclosporine 2-hour post-dose level or CsA C2 test, it is commonly ordered for people who have received an organ transplant or who are being treated for certain autoimmune conditions. The sample collected is whole blood, drawn into a standard EDTA tube.
What Does a Cyclosporine C2 Test Measure?
The Cyclosporine C2 test looks at two key aspects of the drug's behaviour in the body. Here is what the test assesses:
| Parameter | What It Measures |
|---|---|
| Cyclosporine C2 concentration | Measures the amount of cyclosporine in the bloodstream exactly 2 hours after a dose. This helps determine whether drug levels are within the target therapeutic range and supports dose adjustment when needed. |
| Drug exposure estimation (C2 level as a surrogate for AUC) | Assesses the body's overall exposure to cyclosporine. The 2-hour post-dose concentration closely correlates with the area under the concentration–time curve (AUC), providing an indication of whether the prescribed dose is achieving adequate immunosuppression. |
Why is a Cyclosporine C2 Test Done?
The cyclosporine C2 test is ordered to make sure that a patient's drug levels are neither too high (which can cause toxicity) nor too low (which can lead to organ rejection or relapse of an autoimmune condition).
Common Symptoms That May Require This Test
- Signs that the transplanted organ may be under stress (such as reduced urine output or fatigue).
- Numbness or tingling in the hands or feet, which may suggest the drug level is too high.
- Tremors or persistent headache
- Nausea, swelling of the face or legs, or unusual tiredness
- Restlessness or stomach cramps
Conditions This Test Can Help Detect
- Organ rejection risk in kidney, liver, and heart transplant recipients.
- Autoimmune disorders such as rheumatoid arthritis, psoriasis, aplastic anaemia, and Crohn's disease.
- Cyclosporine toxicity, including kidney damage (nephrotoxicity) and nerve-related side effects.
- Inadequate immunosuppression, where drug levels are too low to protect the transplanted organ.
Cyclosporine C2 Test for Chronic Disease Monitoring
Therapeutic drug monitoring of cyclosporine is a well-established part of routine clinical care for organ transplant patients. The test is performed regularly to ensure drug levels stay within the narrow therapeutic range over the long term. How often the test is done depends on the type of transplant, time since the procedure, the patient's age, and their overall health.
How to Prepare and What to Expect
Preparing for the cyclosporine C2 test is straightforward, but the timing of sample collection is critical and must be planned carefully.
Do You Need to Fast?
No fasting is needed before this test. You can eat and drink as normal. The one important restriction is that you should avoid grapefruit and grapefruit juice, as these can significantly raise cyclosporine levels and distort results.
Practical Tips Before Your Test
- Record the exact time you take your cyclosporine dose on the day of the test so the phlebotomist can draw blood at precisely the 2-hour mark.
- Continue all other medications as prescribed unless your doctor instructs otherwise.
- Avoid grapefruit and grapefruit juice for at least 24 hours before the test.
- Avoid alcohol for 24 hours before the test for best accuracy.
- Inform the phlebotomist about all current medications, including antibiotics, antifungals, or other immunosuppressants, as these can affect results.
Step-by-Step Procedure
- Take your cyclosporine dose at your usual scheduled time and note the exact time.
- Exactly 2 hours after your dose, a small sample of blood (approximately 2 mL) is drawn from a vein, usually in your arm.
- The blood is collected into a lavender-top EDTA tube, which contains an anticoagulant to keep the sample stable.
- The sample is labelled with your details and the exact collection time.
- The tube is stored at refrigerated temperature (2 to 8°C) and dispatched to the laboratory.
- The laboratory analyses the sample using an immunoassay (EIA) method to measure the cyclosporine concentration.
Factors That Can Affect Accuracy
The timing of the blood draw is the single most important factor; drawing blood even slightly early or late can skew the result.
- Concurrent medications that affect the liver enzyme CYP3A4 (such as antibiotics or antifungals) can raise or lower cyclosporine levels.
- Grapefruit juice can increase cyclosporine concentrations by more than 60%.
- Liver function affects how the drug is processed, altering measured levels.
- Clotted samples or samples left at room temperature for more than 24 hours will be rejected.
Understanding Your Cyclosporine C2 Test Results
Results from the cyclosporine C2 test must always be reviewed by your transplant doctor or specialist, who will consider your organ type, treatment phase, and other medications before making any adjustments.
| Organ Type | Treatment Phase | Target C2 Range (ng/mL) |
|---|---|---|
| Renal (Kidney) Transplant | Post-transplant (general) | 800 to 1700 |
| Liver Transplant | Post-transplant (general) | 600 to 1000 |
| Heart Transplant | Early (0 to 6 months) | 800 to 1200 |
| Heart Transplant | Maintenance (more than 1 year) | 400 to 800 |
Cyclosporine C2 target concentrations vary according to the transplanted organ, time since transplantation, concomitant immunosuppressive therapy, and individual transplant-centre protocols. The ranges shown are general guidance only and should not be used to adjust medication without specialist advice.
These ranges are general guidelines. Your doctor will interpret your results based on your age, health history, and other factors. Always consult a qualified healthcare professional for personalised medical advice.
Results During Special Conditions
- Drug interactions: Antibiotics, antifungals, and other immunosuppressants may raise or lower cyclosporine levels, increasing the risk of toxicity or rejection.
- Liver function changes: If liver function is impaired, the drug may not be processed normally, leading to higher or lower measured concentrations than expected.
- Individual variation: Patients absorb and process cyclosporine at different rates, so two people on the same dose may show different C2 levels.
How to Maintain Healthy Levels
These general wellness tips can help support stable cyclosporine levels:
- Take cyclosporine at the same time each day, as consistency in dosing supports predictable blood levels.
- Avoid grapefruit juice entirely while on cyclosporine therapy.
- Attend all follow-up appointments and do not skip scheduled blood tests, as regular monitoring is key to safe long-term treatment.
Lupin Diagnostics Cyclosporine C2 Test Price and Home Collection
The cyclosporine C2 test is available at Lupin Diagnostics starting at ₹2,600, with home sample collection available across cities.
| City | Approximate Price (₹) |
|---|---|
| BHOPAL | 2600 |
| CHENNAI | 2600 |
| HYDERABAD | 2600 |
| KOLKATA | 2600 |
| NAVI MUMBAI | 2600 |
| PUNE | 2600 |
Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
How to Book
Select the test on the Lupin Diagnostics website.
- Choose your city and preferred time slot.
- Opt for home sample collection by a certified phlebotomist, or visit your nearest Lupin Diagnostics centre.
- Receive your report via email or WhatsApp within the stipulated turnaround time.
Home Collection
Home collection for the cyclosporine C2 test is available across cities. Because the sample must be drawn exactly 2 hours after your dose, it is important to coordinate the timing clearly with your phlebotomist at the time of booking. All samples are processed in NABL-accredited laboratories, and your digital report is accessible via email or WhatsApp.
Frequently Asked Questions
C0 is the trough level, meaning drug concentration just before a dose. C2 is measured exactly 2 hours after a dose, at the point of peak absorption. The cyclosporine C2 test is considered a more accurate indicator of rejection risk than C0 monitoring, and studies have shown it is linked to better outcomes in transplant patients.
The 2-hour mark is when cyclosporine concentration in the blood is at its highest. Drawing blood even slightly earlier or later can produce a reading that does not reflect actual drug exposure. This is why the exact time of the dose must always be recorded before collection.
Yes, fasting is not required. You can eat and drink normally before the cyclosporine C2 test procedure. The only restriction is to avoid grapefruit and grapefruit juice, as these can raise drug levels considerably.
The frequency depends on your type of transplant, how long ago the transplant was done, your age, and how stable your levels are. Testing is typically more frequent in the early months after a transplant and then done at scheduled intervals during long-term maintenance therapy.
Signs that may suggest elevated levels include numbness or tingling in the hands or feet, tremors, headache, nausea, stomach cramps, and restlessness. If you notice any of these, contact your doctor promptly rather than adjusting the dose on your own.
Yes. Many drugs interact with cyclosporine, including certain antibiotics, antifungals, and other immunosuppressants. These can raise or lower your measured levels. Always tell your doctor and the laboratory about all medications you are currently taking before the test.
Cyclosporine C2 Test: Booking, Price, and Results
