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Test ID VLTU Volatile Screen, Random, Urine


Ordering Guidance


For best clinical correlation, the recommended tests are either VLTS / Volatile Screen, Serum; or VLTB / Volatile Screen, Blood.



Specimen Required


Supplies: Urine Tubes, 10 mL (T068)

Container/Tube: Plastic, 10-mL urine tube

Specimen Volume: 10 mL

Collection Instructions:

1. Collect a random urine specimen.

2. No preservative is required.


Forms

If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.

Secondary ID

8826

Useful For

Detecting the presence of acetone, methanol, isopropanol, or ethanol in urine with subsequent quantitation

Testing Algorithm

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

Method Name

Headspace Gas Chromatography-Flame Ionization Detector (HSGC-FID)

Reporting Name

Volatile Scrn, U

Specimen Type

Urine

Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time
Urine Refrigerated (preferred) 14 days
  Frozen  28 days
  Ambient  24 hours

Clinical Information

Urine provides a medium for easy screening for methanol, ethanol, isopropanol, and acetone.

Reference Values

Methanol:

Not detected (Positive results are quantitated.)

Cutoff concentration: 10 mg/dL

Toxic concentration: ≥10 mg/dL

 

Ethanol:

Not detected (Positive results are quantitated.)

Cutoff concentration: 10 mg/dL

 

Isopropanol:

Not detected (Positive results are quantitated.)

Cutoff concentration: 10 mg/dL

Toxic concentration: ≥10 mg/dL

 

Acetone:

Not detected (Positive results are quantitated.)

Cutoff concentration: 10 mg/dL

Toxic concentration: ≥10 mg/dL

Cautions

Quantitation of acetone, methanol, isopropanol, or ethanol in urine correlates poorly with degree of intoxication.

Day(s) Performed

Monday through Saturday

Report Available

1 to 2 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

80320

G0480 (if appropriate)

NY State Approved

Yes