Thiocyanate
General Information
- Lab Name
- Thiocyanate
- Lab Code
- THCNG
- Epic Name
- Thiocyanate
- Description
Thiocyanate is a metabolite of cyanide that reflects cumulative recent cyanide exposure, but does not indicate current cyanide concentrations. It may be mildly increased in smokers and can accumulate to high concentrations after prolonged therapy (2 or more days) with nitroprusside.
The concentration of thiocyanate in serum is determined by spectrophotometry at 460 nm after protein precipitation and reaction with ferric nitrate. The reportable range is 0.0-50.0 and the imprecision is between 4 and 15%CV.
- Synonyms
- Nitroprusside
- Components
-
Code Name TCN Thiocyanate TCNM Thiocyanate Method
Interpretation
- Method
TCA is used to make a protein free filtrate which forms a colored complex with ferric nitrate and read at 460 nm.
- Reference Range
- See individual components
- Ref. Range Notes
Non-Smoker: 0-0.5 mg/dLSmoker: 0-2.5 mg/dLToxic: 20 mg/dL
Ordering & Collection
- Specimen Type
- Blood
- Collection
-
Preferred:
6 mL blood in RED TOP tube
Also acceptable: LAVENDER or GREEN TOP tube
Unacceptable: any gel tubes
- Quantity
-
Requested: 2 mL serum/plasma
Minimum: 1.2 mL serum/plasma
Processing
- Receiving Instructions
Refrigerate serum/plasma
- Misc Sendout
Performance
- Lab Department
- Chemistry, University(CHU)
- Frequency
- Daily on dayshift. Cut off time 2PM.
- Available STAT?
- No
- Performing Location(s)
Billing & Coding
- CPT Codes
- 84430
- LOINC
- 3002-3
- Interfaced Order Code
- UOW3481