What else can cause urine to test positive for thiodiglycolic acid?

Thiodiglycolic acid is commonly found in general populations who have not
been exposed to vinyl chloride. Some sources can include:

• Certain foods including raw onions, meat, poultry, and seafood.
• Some medications, including Zyrtec, and vitamins.
• Alcoholic beverages.
• Smoke including from wood fireplaces, cooking, and cigarettes.
• Some household products including paints and varnishes.
• Chemicals used in the workplace.