Some NHS Wales websites are down after a fault, the health service has said.
Some services that are unavailable include My Health Online, which allows patients to book appointments and order repeat prescriptions.
The Welsh Blood Service’s site was affected earlier, but it has since been restored. Access to key information on NHS Wales Direct is not affected.
“We are working hard to fully restore services on all websites as soon as possible,” a spokeswoman said.
Hywel Dda, Powys and Aneurin Bevan health boards and the Velindre Trust all confirmed their services were down.
The NHS Wales Informatics Service apologised and advised patients to contact their GP practice directly.