Volatile Screen, Chain of Custody, Blood
Use
This test is useful for the detection and quantitation of acetone, methanol, isopropanol, or ethanol in whole blood. It quantifies the concentration of ethanol in blood correlating with intoxication levels and evaluates toxicity from the measured volatile substances. Specifically, this test includes a chain-of-custody process, making it suitable for situations where results are used in legal contexts. It provides evidence that the specimen gets controlled effectively, reducing opportunities for tampering.
Special Instructions
Not provided.
Limitations
This test does not detect ethylene glycol. Additionally, improper specimen collection, handling, and inappropriate test selection or interfering substances can cause diagnostic confusion. Results can withstand regular court scrutiny due to the chain-of-custody process maintained during specimen submission and analysis.
New York Approved
Methodology
Mass Spectrometry (GC-MS)
Biomarkers
LOINC Codes
- 41266-8 - Volatiles Bld
- 41266-8 - Volatiles Bld
- 9334-4 - Methanol Bld-mCnc
- 5640-8 - Ethanol Bld-mCnc
- 9425-0 - Acetone Bld-mCnc
- 5667-1 - Isopropanol Bld-mCnc
- 77202-0 - Laboratory comment Report
Result Turnaround Time
1-2 days
Related Documents
For more information, please review the documents below
Specimen
Whole Blood
Volume
2 mL
Minimum Volume
0.5 mL
Container
Gray top (potassium oxalate/sodium fluoride); Acceptable: Lavender top (EDTA) or green top (sodium heparin)
Collection Instructions
Do not use alcohol to clean arm. Use Betadine instead. Collect specimen, seal, and submit with associated documentation to satisfy legal chain-of-custody requirements.
Causes for Rejection
Gross lipemia
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 24 hours |
| Refrigerated | 14 days |
| Frozen | 28 days |