Thiocyanate

Test Code

THIOCYN

Alias/See Also

Thiocyanate

Quest Code
87989

CPT Codes
84430

Preferred Specimen

3 mL serum collected in a no additive (red-top) tube, transferred to a plastic screw-cap vial

Minimum Volume

1.5 mL

Other Acceptable Specimens

3 mL plasma collected in an EDTA (lavender-top) tube

Transport Temperature

Refrigerated

Specimen Stability

Room temperature: 72 hours
Refrigerated: 14 days
Frozen: 30 days

Methodology
Colorimetry

Setup Schedule

Wednesday-Sunday a.m.

Report Available

2 days

Clinical Significance

Sodium nitroprusside is a potent hypotensive agent. It is used in the treatment of malignant hypertension and as an adjunct in the control of blood pressure in surgery. The major metabolite is thiocyanate which is largely excreted by the kidneys. Thiocyanate levels should be monitored in any patient receiving therapy longer than 48 hours, or who has renal or hepatic impairment. Thiocyanate is also a metabolite of acetonitrite, acrylonitrite, amygdalin and cyanide. Thiocyanate is higher in smokers vs. non-smokers.

Performing Laboratory
Quest Diagnostics Ncihols Institute
Chantilly, VA

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.