Barbiturates Screen With Reflex Confirmation, Whole Blood

Casandra

Casandra Test Code LC84423Version 1 (DRAFT)

Performing Lab

Lab LabcorpLab Test ID 700877CPT Code 80307

Barbiturates Screen With Reflex Confirmation, Whole Blood

Clinical Use

Use

This test is used to screen for the presence of barbiturates in a whole blood specimen. Initial presumptive testing is conducted using an immunoassay method at a screening threshold of 0.1 μg/mL. If the initial screen is positive, reflex confirmation is performed using chromatography mass spectrometry (GC/MS or LC/MS-MS) to provide a definitive analysis. Barbiturates are central nervous system depressants and are often a subject of drug abuse or overdose investigations.

Special Instructions

For the initial screening, an immunoassay is used, and presumptive positive results are confirmed with GC/MS or LC/MS-MS. Ensure proper specimen collection and handling to maintain integrity, including using appropriate tubes such as gray-top, green-top, or lavender-top.

Limitations

This test has been developed and performance characteristics determined by LabCorp, but it has not been cleared or approved by the U.S. Food and Drug Administration (FDA). Results are intended for medical use and should be interpreted by qualified healthcare professionals. Temperature and storage conditions may affect specimen integrity, so follow proper storage instructions closely.

Test Details