A 10-year-old Tze Wan Shan boy has been found to have renal stones suspected to be related to the consumption of melamine-tainted milk products.

The Centre for Health Protection today said he had consumed milk products and biscuits bought from the local market.

The centre's hotline 2125 1133 operates from 9am to 5.45pm weekdays for people who have consumed milk products contaminated with melamine or those who are experiencing renal symptoms.