The health select committee heard evidence suggesting 20% of negative results could be false.
Hospital patients sick with the virus will be given the drug to see if it can help with their breathing.
Being black or from an ethnic minority is a "major risk factor" in coronavirus, Matt Hancock says.
The head of the UK's statistics watchdog writes to Matt Hancock, saying data is "far from complete".
Melanie Connell, who underwent a triple bypass, urges women not to be afraid of seeking medical help.
Over 2,800 deaths linked to virus in most recent week, but total fatalities still higher than normal.
Health advisory body NICE recommends the use of ECT for some cases of moderate or severe depression.
The UK Statistics Authority has criticised the government's handling of Covid-19 testing data.
Why is lifting restrictions being described as a "dangerous moment"?
More than 23,000 cancers could have gone undiagnosed during lockdown, Cancer Research UK says.