Singapore’s Health Sciences Authority said that since February it has required the removal of more than 40 COVID-19 diagnostic test kits from e-commerce websites for making fraudulent claims.

The agency said it has not approved or validated any COVID-19 test kits for home use and stressed that the tests have inherent design limitations.

To ensure accurate test results, testing for COVID-19 in Singapore can only be done by laboratories or medical professionals in clinics and hospitals, the agency said.