Test Overview
Test Methodology

Liquid Chromatography with Tandem Mass Spectrometry (LC/MS-MS)

Test Usage

Monitoring possible exposure to cyanide; establishing cause of death in cyanide exposure.

Reference Range *

Normal: Up to 0.05 mcg/mL
Potentially toxic: 0.50 mcg/mL and greater
Potentially lethal: 2.0 mcg/mL and greater

Test Limitations

Not useful for monitoring nitroprusside therapy; the Thiocyanante assay is the preferred test for monitoring nitroprusside therapy.

Test Details
Days Set Up
Daily
Analytic Time

7 - 11 days

Soft Order Code
FCYNB
MiChart Code
Cyanide Level
Synonyms
  • Amygdalin
  • Laetrile
  • CYAN
  • CYANIDE, BLOOD
Laboratory
Sendout
Reference Laboratory
Mayo FCYNB (NMS 1380B)
Section
Special Testing
Specimen Requirements
Collection Instructions

Collect blood in a gray top tube. Send intact whole blood FROZEN.

Normal Volume
2 mL whole blood
Minimum Volume
0.5 mL whole blood
Additional Information

Test sent to Mayo Medical Laboratories; performed by NMS Labs.

Billing
CPT Code
82600
Fee Code
20092
NY State Approved
No