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Cyanide, Blood
Test Code400
CPT Codes
82600
Preferred Specimen
10 mL whole blood collected in a sodium heparin (green-top) tube
Minimum Volume
1 mL
Other Acceptable Specimens
6 mL whole blood collected in EDTA (lavender-top) or sodium fluoride (gray-top) tube
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 14 days
Refrigerated: 14 days
Frozen: 30 days
Refrigerated: 14 days
Frozen: 30 days
Methodology
Colorimetric
Setup Schedule
A.M. Sets up 3 days a week.
Clinical Significance
Toxic syndromes are rapid and include flushing, headache, dizziness, and tachypnea that may progress to respiratory depression and death. 80% of cyanide is converted to thiocyanate. Administration of sodium nitroprusside contributes to the total body pool of cyanide and complicates interpretation.