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HelpTest Code VLTS Volatile Screen, Serum
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
SerumAdditional Testing Requirements
If measurement of ethylene glycol is also needed, order ETGL / Ethylene Glycol, Serum in addition to this test.
Specimen Required
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: Full tube
Collection Instructions:
1. Do not use alcohol to clean arm. Use alternative such as Betadine to cleanse arm before collecting any specimen for volatile testing.
2. Avoid exposure of specimen to atmosphere.
3. Within 2 hours of collection, centrifuge the specimen.
4. For serum gel tubes, do not aliquot. Send centrifuged specimen in original tube.
5. For red-top tubes, aliquot serum into a plastic vial.
Specimen Minimum Volume
Serum: 0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 14 days |
| Frozen | 28 days | |
| Ambient | 24 hours |
Reference Values
Methanol:
Not detected (Positive results are quantitated.)
Toxic concentration: ≥10 mg/dL
Ethanol:
Not detected (Positive results are quantitated.)
Toxic concentration: ≥400 mg/dL
Isopropanol:
Not detected (Positive results are quantitated.)
Toxic concentration: ≥10 mg/dL
Acetone:
Not detected (Positive results are quantitated.)
Toxic concentration: ≥10 mg/dL
Day(s) Performed
Monday through Saturday
CPT Code Information
G0480
80320 (if appropriate for select payers)
Report Available
1 to 2 daysReject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |