Cyclosporine A, 2-Hour Post Dose (C2) by Tandem Mass Spectrometry
0058902
Ordering Recommendation
Submit With Order
Mnemonic
C2CYA
Methodology
Quantitative Liquid Chromatography-Tandem Mass Spectrometry
Performed
Sun-Sat
Reported
Within 24 hours
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Two hour post-dose level should be drawn.  
Collect
Lavender (EDTA) or pink (K2EDTA).  
Specimen Preparation
Transport 1 mL whole blood. (Min: 0.25 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Serum or plasma. Specimens left at room temperature for longer than 24 hours. Clotted specimens.  
Remarks
 
Stability
Ambient: 24 hours; Refrigerated: 2 weeks; Frozen: 2 months  
Reference Interval
Interpretive Data
Cyclosporine A levels in specimens drawn 2 hours post-dose may estimate the AUC better than trough specimens. The optimal therapeutic range for a given patient may differ from this suggested range based on the indication for therapy, treatment phase (initiation or maintenance), use in combination with other drugs, time of specimen collection relative to prior dose, type of transplanted organ, and/or the therapeutic approach of the transplant center. A suggested target range for renal transplant is 800-1700 ng/mL. A suggested target range for liver transplant is 600-1000 ng/mL. The higher ranges represent concentrations immediately post-transplant and the lower ranges represent concentrations during the maintenance phase.

See Compliance Statement B: www.aruplab.com/CS
Note
Cyclosporine (Sandimmune) whole blood concentrations can be measured by either chromatographic or immunoassay methodologies. These two methodologies are not directly interchangeable, the measured cyclosporine whole blood concentration depends on the methodology used. Reference ranges may vary according to the specific immunoassay or HPLC-MS/MS test. Generally, immunoassays have been reported to have a positive bias relative to HPLC-MS/MS assays due to the detection of antibody cross-reactivity with cyclosporine metabolites.
CPT Code(s)
80158
Components
Component Test Code*Component Chart Name
0058902CyclosporineA, 2-Hr Post(C2), HPLC-MS/MS
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Cross References
  • Gengraf
  • Neoral
  • Restasis
  • Sandimmune