The prototype is six times faster than current tests and aims to speed up diagnosis, the London-based global research charity Wellcome Trust and Britain's Department for International Development (DFID) said in a statement.
"A reliable, 15-minute test that can confirm cases of Ebola would be a key tool for effective management of the Ebola outbreak, allowing patients to be identified, isolated and cared for as soon as possible," said Val Snewin of the Wellcome Trust.
The trials, to be led by researchers from Dakar's Pasteur Institute at an Ebola treatment centre in Conakry in the coming weeks, will come as a welcome boon in Guinea which has lost 1,200 people to Ebola.
The biggest Ebola epidemic on record has claimed around 5,700 lives in Guinea, Liberia and Sierra Leone since the beginning of the year, according to the World Health Organization.
President Hollande pledged his support for Guinea after arriving in France's west African former colony on Friday.
