The chancellor is set to speak to Sky News, following the spending review.
Rachel Reeves is on a visit to a hospital in Derby, where she has confirmed some 拢6bn will be spent on speeding up testing and treatment in the NHS.
It follows Rachel Reeves unveiling her spending review, which made health the number one priority - with 拢29bn of extra cash per year promised for the NHS.
This investment, confirmed today, will help pay for new scanners, ambulances and urgent treatment centres aimed at providing an extra four million appointments in England over the next five years.
The chancellor hopes the funding will reduce waiting lists and reach Labour鈥檚 "milestone" of ensuring the health service carries out 92% of routine operations within 18 weeks.
Reeves said: "Part of our record investment will deliver 4m tests, scans and procedures, so hardworking people can get the health care they and their families need.
"There is no strong economy without a strong NHS, and we'll deliver on our Plan for Change to end the hospital backlog, improve living standards and get more money in people鈥檚 pockets."
The new 拢6 billion investment will come from the capital settlement for the NHS and will also help to speed up diagnoses with scans and treatment available in places such as shopping centres and high streets.
A further 拢30 billion will also be invested over the next five years in day-to-day maintenance and repair of the NHS estate. Of this, more than 拢5bn will be spent specifically on repairing the most serious and critical infrastructure.
It follows the spending review yesterday, which set out day-to-day spending across government for the next three years, as well as plans for capital investment over the next four years.
The NHS and defence were seen as big winners from the review, as both will see higher than average increases in public spending.
But this means other departments, such as the Home Office and the Foreign Office, saw their budgets squeezed.