Low concentrations of thiocyanate are usuallyfound in urine, due mainly to the subject’s diet. Thismay be through ingestion of certain vegetablescontaining glucosinolates (cabbage/ turnip, etc.), orfoods that actually contain levels of inorganic thio-
cyanate such as milk and cheese. Higher levels ofthiocyanate are found where thiocyanate has beendirectly administered to treat thyroid conditions, orwhere sodium nitroprusside (used as a hypotensiveagent) is metabolised to contribute to urinary thio-cyanate. At high concentrations, thiocyanate can leadto vertigo and unconsciousness, and as such is an