Majority of the top-10 traders in such products are EU member states.
It said that in developing and least-developed countries, average customs duties for all the member nations and preferential rates (under free trade agreements) are higher, especially for medical supplies, medicines and PP (personal protection) products.
"WTO members have eliminated tariffs on over 84 per cent of medical products for 2020 under their various RTAs," it said.
Several medical devices like ventilators and masks are in huge demand due to the coronavirus pandemic.
India has also put certain restrictions on exports of such products to maintain domestic availability.
"The COVID-19 pandemic has also highlighted the need for greater cooperation and efforts to reduce barriers to trade, including through increased mutual recognition agreements (MRAs)," the WTO said.
With the current supply shortages of certain medical and sanitary products caused by the COVID-19 pandemic, this report looks at the manner in which such products are treated in RTAs and the extent to which they are traded between RTA partners.
"The top-10 exporters of medical products, which account for almost 75 per cent of global exports of these products, are all parties to RTAs. Belgium, France, Germany, Ireland, Italy, the Netherlands and the UK (all of which are currently party to the EU customs union) are party to 44RTAs, Switzerland to 31, the US to 14 and China to 15," it said.