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Test Code VOLTB Volatile Screen, Serum

Additional Codes

Mayo VLTS
Epic ID LAB2879

 

Specimen Type

Serum


Additional 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 for serum collected in red-top tubes only.

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. Centrifuge serum gel tubes with 2 hours of collection but do not aliquot.

4. Centrifuge red-top tubes and aliquot serum in plastic vial within 2 hours of collection.


UPH Waterloo Region Lab Test Catalog Note:

DO NOT OPEN TUBE. Avoid exposure of specimen to atmosphere. Includes: methanol, ethanol, isopropanol, and acetone.

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 14 days
  Frozen  28 days
  Ambient  24 hours
UPH Waterloo Region Lab Test Catalog Note:

Transport refrigerated in original tube.

Reject Due To

Gross hemolysis OK
Gross lipemia OK
Gross icterus OK
 

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Method Name

Headspace Gas Chromatography Flame Ionization Detector (HSGC-FID)

Testing Algorithm

This test includes analysis for methanol, ethanol, isopropanol, and acetone.

Useful For

Detection and quantitation of acetone, methanol, isopropanol, and ethanol in serum

 

Quantification of the concentration of ethanol in serum correlates with degree of intoxication

 

Evaluation of toxicity to the measured volatile substances

Day(s) Performed

Monday through Saturday

Report Available

1 to 2 days

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

CPT Code Information

G0480

80320 (if appropriate for select payers)

Clinical Toxicology CPT Code Client Guidance