Cyanide Screen, Blood Test (9142B)
||Cyanide Screen, Blood
||CN; Hydrogen Cyanide; Potassium Cyanide
||Exclusion Screen; This test is New York State approved.
||High Performance Liquid Chromatography/
TandemMass Spectrometry (LC-MS/MS)
||3 mL Blood
||Gray top tube (Sodium Fluoride / Potassium Oxalate)
||Studies have shown that cyanide has variable instability in biological specimens and is particularly unstable in some postmortem specimens. The loss of cyanide can be minimized by shipping the sample to the laboratory for analysis as soon as possible, preferably using refrigerated or frozen transportation and preservation using sodium fluoride / potassium oxalate (grey-top tube). Samples should not be refrozen if previously thawed. The potential for increases in cyanide concentrations, although rare, have also been demonstrated and may be due to microbial action. Preservation with sodium fluoride may reduce this possibility.
|Light Protection Required
||Room Temperature: Undetermined
Refrigerated: 1 day(s)
Frozen (-20 °C): 3 month(s)
|Day(s) Test Set-up / TAT
||[LC-MS/MS] Tuesday / 3 days
|Suggested CPT Code
(when required, addl' fee may apply)
|5636B - Cyanide Confirmation, Blood
|Test Summary Sheet
*Rejection criteria pertain to clinical specimen submissions only.
**Stated minimum volume allows for a single analysis. Repeat analysis will not be performed.