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Item Value
Approval req'd? No
Available Stat? No
Test code SIRO
Performed by China Basin Chemistry
In House Availability Daily (day shift)
Method Abbott Architect Chemiluminescent Immunoassay
Collection Instructions Time to steady state: 6-10 days

Trough samples should be collected no more than 30-60 minutes before next dose
Container type Lavender top
Amount to Collect 2 mL blood
Sample type EDTA whole blood
Preferred volume 2 mL whole blood
Min. Volume 0.3 mL whole blood

Note: This volume does not allow for repeat testing if needed.
Processing notes Refrigerate
Units µg/L
Normal range
Therapeutic trough 5 - 15 µg/L
Synonyms Rapamune
Turn around times For samples received by 1200 (Monday-Friday) and 1000 (weekends and holidays) the results will be available by 1600. Results for samples that miss the cut-off times will be available the following day.
Additional information Sirolimus is an immunosuppresant drug used to prevent organ graft rejection. Therapeutic drug monitoring is used to optimize dose.

This method yields results approximately 20% higher than the Abbott IMx immunoassay due to improved extraction and recovery of sirolimus from whole blood samples. Information regarding cross reactivity of this assay with metabolites and other drugs can be found in the link to the Lab Procedure.

Click here for: A Guide on Drug Level Monitoring
CPT coding 80195
LOINC code 29247-4
Last Updated 6/21/2016 14:06:55
Entry Number 856
Lab Procedure Link Click here for Procedure
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