Lorazepam LORAZ

Method(s) High Performance Liquid Chromatography
Specimen Required
Collect

One 6 mL gray (potassium oxalate/sodium fluoride) top tube. Also acceptable: red, lavender (EDTA), pink (K2EDTA) or green (sodium heparin) top tubes.

Transport

2 mL serum or plasma refrigerated (Min: 1 mL)

Remarks

Patient prep: Timing of specimen collection: Pre-dose (trough) draw-At steady state concentration.

Stability

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

Unacceptable Conditions

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

Schedule Tue, Fri
Billing Code 5011533
CPTCode 80346 (Alt code: G0480)
Notes Separate serum/plasma from cells within 2 hours of collection.
Preferred Specimen Collection Device(s)
Reference Interval

Dose-Related Range:50-240 ng/mL - Dose (adult) 1-10 mg/d
Toxic: Greater than 300 ng/mL

No Appointment Necessary
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12 Patient Service Centers in Central New York.

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