0090181
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Lorazepam

LORAZ
Example Reports
High
Low
Normal

Ordering Recommendation

Use to optimize dosing and monitor patient adherence.

New York DOH Approval Status

This test is New York state approved.

Specimen Required

Patient Preparation

Timing of specimen collection: Predose (trough) draw at steady state concentration.

Collect

Gray (potassium oxalate/sodium fluoride). Also acceptable: Plain red, green (sodium heparin), lavender (K2 or K3EDTA) or pink (K2EDTA).

Specimen Preparation

Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 2 mL serum or plasma to an ARUP standard transport tube. (Min: 1 mL)

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Gel separator tubes. Plasma or whole blood collected in light blue (sodium citrate). Hemolyzed specimens.

Remarks
Stability

After separation from cells: Ambient: 1 week; Refrigerated: 2 weeks; Frozen: 3 years (Avoid repeated freeze/thaw cycles)

Methodology

Quantitative Liquid Chromatography-Tandem Mass Spectrometry

Performed

Tue, Fri

Reported

1-7 days

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.

Compliance Category

Standard

Note

Hotline History

View Hotline History

 

Hotline History

Date of Change
Test Name Change
Methodology
Performance/Reported Schedule
Specimen Requirements
Reference Interval
Interpretive Data
Note
CPT Code
Component Change
Other Interface Change
New Test
Inactive
11/13/2023
X
N/A

CPT Codes

80346 (Alt code: G0480)

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Components

Component Test Code* Component Chart Name LOINC
0090181 Lorazepam 3724-2
* 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.

Aliases

  • Ativan
  • ativan blood level
Lorazepam