Test Details
Mnemonic
BUS
Ordering Code
3500905
CPT-4 Code(s)
80375 (G0480)
Specimen Information
Patient Preparation
Peak serum levels are recommended when monitoring patients because the level in the blood drops so rapidly that many negative results are found at the trough. The peak occurs at 40 to 90 minutes post dose.
Collect
Red top
Specimen Preparation
Centrifuge, separate serum from cells and send 1.0 mL serum refrigerated in a screw capped plastic vial.
Alternate Specimen
Plasma: Lavender EDTA
Minimum Volume
0.4 mL
Transport Temperature
Refrigerated
Rejection Criteria
Serum separator tube (SST), Plasma separator tube (PST)
Stability
Room temperature: 30 days
Refrigerated: 30 days
Frozen: 30 days
Refrigerated: 30 days
Frozen: 30 days
Methodology
High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS)
Reference Range
See report
Performing Laboratory
NMS Labs
New York DOH Approval Status
Yes