Methyl Alcohol, Blood or Serum [643X]

Test Code

CPT Codes

Preferred Specimen
5 mL whole blood collected in a fluoride oxalate (gray-top) tube

Minimum Volume
1 mL

Other Acceptable Specimens
Serum collected in a red-top tube (no gel) • Whole blood or plasma collected in an EDTA (lavender-top), or sodium heparin (green-top) tube

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 5 days
Refrigerated: 14 days
Frozen: 30 days


Setup Schedule
Set up: Daily a.m.; Report available: Next day

Reference Range
None detected

Clinical Significance
Methanol can be consumed intentionally or accidentally. It is an ingredient in antifreeze, cleaning fluids and is used as a solvent. The CNS effects of methanol are less than ethanol. However, this substance is far more toxic since ingestion can lead to acidosis and optic neuropathy which can result in blindness or death. Methanol is oxidized to formaldehyde.

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.