DiagnaMed Launches Ontario Hydrogen Exploration Campaign in Conjunction with QIMC and INRS; Strengthens Board

Toronto, Ontario--(Newsfile Corp. - July 3, 2025) - DiagnaMed Holdings Corp. (CSE: DMED) ("DiagnaMed" or the "Company"), is pleased to announce it has signed an agreement with the Institut national de la recherche scientifique (INRS) to initiate a comprehensive hydrogen exploration campaign on its Ontario properties, in conjunction with Quebec Innovative Materials Corp. (CSE: QIMC) ("QIMC"). The exploration will be led by Dr. Marc Richer-Laflèche and will include collaboration with members of the Temiscamingue First Nations. Leveraging the innovative geological exploration model successfully developed and deployed by INRS and QIMC at St-Bruno-de-Guigues, Quebec, the Ontario program will include an extensive campaign of over 2,000 soil gas samples aimed at identifying high-potential natural hydrogen zones.

The INRS-QIMC exploration model has yielded exceptional results in Quebec, characterized by notably high hydrogen (H₂) measurements indicative of significant geological processes:

• Rapid, fault-controlled advection demonstrated by sustained high hydrogen (H2) levels.

• Elevated hydrogen concentrations, suggesting an actively supplied deep source, potentially from radiolysis or iron oxidation processes migrating along fault lines.

• The model confirms a classic "advective fault" degassing system, ranking among the most compelling documented examples globally for natural hydrogen production

DiagnaMed anticipates replicating this success in Ontario, significantly enhancing the understanding and valuation of its exploration assets.

John Karagiannidis, President of DiagnaMed, stated, "We are excited to launch this exploration initiative alongside QIMC and INRS. The expertise of Dr. Richer-Laflèche and our collaboration with the Temiscamingue First Nations underscore our commitment to responsible, community-engaged exploration. This campaign represents a major step forward in unlocking Ontario's natural hydrogen potential and creating sustainable value for our shareholders."

DiagnaMed is also pleased to announce important governance enhancements. The Company warmly welcomes Mr. André Turmel to its Board of Directors. Mr. Turmel brings extensive expertise in corporate governance, legal frameworks, and resource development, providing valuable strategic guidance as DiagnaMed expands its exploration initiatives. Concurrently, Mr. Carlo Sansalone has resigned from the Board. DiagnaMed expresses its sincere gratitude to Mr. Sansalone for his dedicated service and meaningful contributions to the Company's growth.

About DiagnaMed Holdings Corp.

DiagnaMed Holdings Corp. (CSE: DMED) (OTCQB: DGNMF) is a Canadian technology innovator specializing in advanced hydrogen extraction technologies designed to support the rapidly growing natural hydrogen industry. Focused on commercial scalability, DiagnaMed aims to deliver cost-effective, sustainable, and efficient hydrogen solutions critical for global energy security and decarbonization. Visit DiagnaMed.com.

For more information, please contact:

John Karagiannidis, President and CEO

Neither the Canadian Securities Exchange nor its Regulation Services Provider have reviewed or accept responsibility for the adequacy or accuracy of this release.

Cautionary Statement

Certain statements in this news release are forward-looking statements, including with respect to future plans, and other matters. Forward-looking statements consist of statements that are not purely historical, including any statements regarding beliefs, plans, expectations or intentions regarding the future. Such information can generally be identified by the use of forwarding-looking wording such as "will", "may", "expect", "could", "can", "estimate", "anticipate", "intend", "believe", "projected", "aims", and "continue" or the negative thereof or similar variations. The reader is cautioned that assumptions used in the preparation of any forward-looking information may prove to be incorrect. Events or circumstances may cause actual results to differ materially from those predicted, as a result of numerous known and unknown risks, uncertainties, and other factors, many of which are beyond the control of the Company, including but not limited to, business, economic and capital market conditions, the ability to manage operating expenses, and dependence on key personnel. Such statements and information are based on numerous assumptions regarding present and future business strategies and the environment in which the Company will operate in the future, anticipated costs, and the ability to achieve goals. Factors that could cause the actual results to differ materially from those in forward-looking statements include, the continued availability of capital and financing, litigation, failure of counterparties to perform their contractual obligations, loss of key employees and consultants, and general economic, market or business conditions. Factors that could cause actual results to differ materially from those anticipated in these forward-looking statements are described under the caption "Risk Factors" in Company's management's discussion and analysis for the Three and Six Months Ended March 31, 2025 ("MD&A"), dated May 28, 2025, which is available on the Company's profile at www.sedarplus.ca. Forward-looking statements contained in this news release are expressly qualified by this cautionary statement. The reader is cautioned not to place undue reliance on any forward-looking information. The forward-looking statements contained in this news release are made as of the date of this news release. Except as required by law, the Company disclaims any intention and assumes no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

This news release does not constitute an offer to sell or a solicitation of an offer to buy nor shall there be any sale of any of the securities in any jurisdiction in which such offer, solicitation or sale would be unlawful, including any of the securities in the United States of America. The securities have not been and will not be registered under the United States Securities Act of 1933, as amended (the "1933 Act") or any state securities laws and may not be offered or sold within the United States or to, or for account or benefit of, U.S. Persons (as defined in Regulation S under the 1933 Act) unless registered under the 1933 Act and applicable state securities laws, or an exemption from such registration requirements is available.

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