| Laboratory: | Clinical Biochemistry | ||||
| Test Name: |
VOLATILE SCREEN - (P)
Test Code:
ALC
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| Clinical Information: |
Test performed at: St Boniface Hospital by Shared Health Clinical Biochemistry Laboratory using a gas chromatography (GC-FID) method. This is a laboratory developed test.
Ethanol, methanol and isopropanol are measured simultaneously. Ethylene glycol is a separate test; on initial screen, lab will add Ethylene Glycol to the order. Radiator antifreeze contains ethylene glycol. Windshield washer antifreeze contains methanol. Use soap and water to clean venipuncture site. |
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| Collection Devices: |
Do not use separator gel.
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| Specimen Required: |
Any anticoagulant plasma or serum collected without gel is acceptable. Specimen Stability: Refrigerated: 14 days Frozen: 28 days Other comments: Reference for analyte stability: Mayo Clinic Laboratories |
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| Referral: |
Plasma or serum must be aliquoted. Full aliquot tube is required.
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| Requisition: | |||||
| Reference Values: |
Not present unless consumed.
Methanol Toxic: > 6 mmol/L Lethal: >30 mmol/L (mmol/L x 3.2 = mg/dL) Isopropanol Toxic: >12 mmol/L Lethal: >35 mmol/L (mmol/L x 6.0 = mg/dL) Ethanol Toxic: >33 mmol/L Lethal: >90 mmol/L (mmol/L x 4.6 = mg/dL) Acetone Toxic: >3.4 mmol/L |
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| Availability: |
Stat or Routine
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| See Also: | |||||
| More Information: |
Do both volatile and ethylene glycol screens on the initial specimen. If an ingestion is confirmed, subsequent analysis of methanol or ethylene glycol during treatment at approximately 4-6 hour intervals is appropriate.
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