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Test Code VLTB Volatile Screen, Blood

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Whole blood


Advisory Information


This test is not performed using chain of custody. For chain of custody testing order VLTBX / Volatile Screen, Chain of Custody, Blood.



Additional Testing Requirements


Ethylene glycol requires a separate request. See ETGL / Ethylene Glycol, Serum.



Specimen Required


Container/Tube:

Preferred: Grey top (potassium oxalate/sodium fluoride)

Acceptable: Any anticoagulant

Specimen Volume: 1 mL

Collection Instructions: Do not use alcohol to clean arm. Use alternatives such as Betadine to cleanse arm before collecting any specimen for volatile testing.


Specimen Minimum Volume

0.5 mL or amount to fill 1 tube

Specimen Stability Information

Specimen Type Temperature Time Special Container
Whole blood 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) and Time(s) Performed

Monday through Sunday; Varies

CPT Code Information

80320

G0480 (if appropriate)

Reject Due To

Gross hemolysis OK
Gross lipemia Reject
Gross icterus OK
 

Method Name

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

Secondary ID

89190

Testing Algorithm

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