Lorazepam
0090181
 
Ordering Recommendation
Mnemonic
LORAZ
Methodology
Quantitative Liquid Chromatography-Tandem Mass Spectrometry
Performed
Tue, Fri
Reported
1-5 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Timing of specimen collection: Pre-dose (trough) draw - At steady state concentration.  
Collect
Plain red. Also acceptable: Lavender (K2 or K3EDTA) or pink (K2EDTA).  
Specimen Preparation
Separate serum or plasma from cells within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Whole blood. Gel separator tubes, light blue (citrate), or yellow (SPS or ACD solution).  
Remarks
 
Stability
After separation from cells: Ambient: 12 hours; Refrigerated: 5 days; Frozen: 2 weeks  
Reference Interval
Effective November 18, 2013
Dose-​Related Range: 50-​240 ng/mL -​ Dose (Adult): 1-​10 mg/d
Toxic: Greater than 300 ng/mL
Interpretive Data
Adverse effects may include respiratory depression, sedation, dizziness, weakness and lethargy.
Note
CPT Code(s)
80154
Components
Component Test Code*Component Chart Name
0090181Lorazepam
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, contact interface support at interface.support@aruplab.com.
Cross References
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