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Epic Code LAB2111582 Quetiapine, Blood Level

Test Name Alias

Seroquel | 998

Interface Order Alias


Collection Instructions

Specimen Collection: Blood


Container(s): Red top (no additive) or Gray Top (Potassium Oxalate and Sodium Fluoride) 

Preferred Volume to Collect: 3.0 mL

Minimum Volume to Collect: 2.0 mL

Neonate Volume to Collect: 2.0 mL

Capillary collect ok? Yes

Microtainer acceptable?  Yes


Collection Instructions:


  • After collection, gently invert tube 8-10 times.
  • Red Top is preferred tube.
  • Specimen should be processed – See Processing Instructions.

Processing Instructions (Laboratory, Outpatient or Off-site collection)

Processed Specimen: Plasma or Serum

Centrifuge/Spin: Yes

Aliquot: Yes


Processing Instructions:

  • Red top:
  • When tubes are clotted (30-45 minutes), centrifuge specimen.
  • Pipette serum into aliquot tube
  • Green top:
    • Centrifuge after collection
    • Pipette plasma into aliquot tubes

Minimum plasma/serum volume: 1.0 mL


Transport Temperature: Ambient

Specimen Stability

Ambient: 72 hours

Refrigerate: 7 days

Frozen: 180 days

Laboratory Retention: 7 days

Test Frequency

Available 24 hours, usual TAT 1-3 days.

STAT TAT 4 hours.

Reference Range

100 to 1,000 ng/mL.


Performing Department


Performing Department Laboratory Location

Corewell Health Reference Laboratory, Grand Rapids, MI


Liquid Chromatography-Mass Spectrometry


This test was developed and its performance characteristics determined by Spectrum Health Toxicology Laboratory. It has not been cleared or approved by the FDA. The laboratory is regulated under CLIA as qualified to perform high-complexity testing. This test is used for clinical purposes. It should not be regarded as investigational or for research.




80342, G0480

CDM Code


Epic Test ID



Quetiapine Lvl: 26776-5

Additional Information

Gold top (Serum Separator/Plasma Separator, SST Gel) are not acceptable

Reviewed Date