Confirmed case of fluorosis is defined by presence of fluoride in urine more than:: (A) 1 mg/L, (B) 3 mg/L, (C) 5 mg/L, (D) 7 mg/L
Answer is A. Confirmed case of fluorosis is defined as presence of one or both of the following: High level of fluoride in urine >1mg/L Intraosseous membrane calcification in fore arm confirmed by Xray Ref: Health policies and programmes in India, D.K. Taneja 11th edition page: 329