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Beaumont Laboratory

Triazolam Level

Halcion®, NMS #9285SP, Order as a Miscellaneous Sendout.

Specimen Collection Criteria

Collect: One plain Red-top tube.

Do not use Serum Separator Tubes.
Time of draw: 1-1.5 hours after dose (Peak).

Physician Office/Drawsite Specimen Preparation

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to a plastic transport tube and refrigerate (2-8°C or 36-46°F).

Preparation for Courier Transport

Transport: 2.0 mL serum, refrigerated (2-8°C or 36-46°F). (Min: 0.8 mL)

Rejection Criteria

  • Serum Separator (SST) tubes.
  • Specimens not collected and processed as indicated.


Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 14 days
Refrigerated (2-8°C or 36-46°F): 14  days
Frozen (-20°C/-4°F or below): 14 days

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Sendout Laboratory with any questions.


Sent to ARUP Laboratories, Salt Lake City, UT, forwarded to National Medical Services (NMS), Willow Grove, PA.


Monday - Friday.
Results available in 4-7 days.

Reference Range

By report.

Test Methodology

High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS).

Clinical Utility

Triazolam is indicated for the short-term treatment of insomnia (generally 7-10 days). This assay is used for the therapeutic monitoring and toxicity assessment of triazolam.

CPT Code


Test Codes

NMS #9285SP, Order as a Miscellaneous Sendout.

Last Updated


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This directory currently reflects information only for specimens collected and/or processed at the Farmington Hills, Grosse Pointe, Royal Oak, and Troy campuses.