Test Overview
Test Methodology
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Test Usage
Therapeutic drug monitoring.
Reference Range *
5 - 20 ng/ml
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
Days Set Up
Daily
Analytic Time
6 - 11 days
Soft Order Code
MMLR
Synonyms
- Halcyon
Laboratory
Sendout
Reference Laboratory
Mayo FHAL (90119) (MedTox 125)
Section
Special Testing
Specimen Requirements
Collection Instructions
Collect blood in 7 ml red or green top tube; do not use SST/PST tube. Centrifuge, aliquot serum or plasma into plastic vial and store at room temperature or refrigerate.
Normal Volume
2 ml serum or plasma
Minimum Volume
0.5 ml serum or plasma
Storage Temperature
Refrigerated preferred, frozen acceptable
Rejection Criteria
SST or PST tube not acceptable.
Additional Information
Test sent to Mayo Medical Laboratories; performed by MedTox Laboratories.
Billing
CPT Code
80346
Fee Code
32083