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92220:VENLAFAXINE (EFFEXOR®) LEVEL | |||||||||
Alias Names: | Desmethylvenla faxine | ||||||||
Methodology: | High Performance Liquid Chromatography with Ultraviolet Detection (HPLC-UV) | ||||||||
Edit Date: | 2/8/2010 | ||||||||
Performed: | Daily | ||||||||
Released: | 24-48 hours after setup at PeaceHealth Laboratories’ reference lab | ||||||||
CPT Code: | 82492-90 | ||||||||
Specimen Collection Details | |||||||||
Collection: | One 5 mL red top tube. Do not use serum separator tube (SST). NOTE: Trough levels are most reproducible. | ||||||||
Handling: | Allow to clot, centrifuge and separate serum into a plastic vial. | ||||||||
Stability: | 72 hours ambient. Refrigerate or freeze for longer storage. | ||||||||
Standard Volume: | 3 mL serum | ||||||||
Minimum Volume: | 0.6 mL serum | ||||||||
Transport: | Refrigerated. | ||||||||
Rejection Criteria: | Use of SST. |
Reference Range: | |||||||||||||||||||
Report Limit: 10 ng/mL
Reference ranges for venlafaxine and desmethylvenlafaxine have not been established. Expected concentrations for venlafaxine are 100-500 ng/mL with desmethylvenlafaxine concentrations of 200-400 ng/mL. Toxic concentrations have not been established. |
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