The response came just hours after Nicola Sturgeon tweeted a warning to treat latest coronavirus figures with âcautionâ.
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The UK Government has insisted there is no delay to covid test results at a Scottish laboratory.
A Scottish Office spokesman denied there was any âcapacity issueâ at the UK Governmentâs Glasgow Lighthouse Lab.
The response came just hours after Nicola Sturgeon urged the UK Government to resolve a processing delay in covid test results.
In a tweet on Sunday afternoon, she wrote: âTodayâs figure for positive Covid cases should be treated with some caution due to a processing delay within the UK lab system.
â@scotgov is liaising with the UK government to understand and resolve this as quickly as possible. I will give update at daily briefing tomorrow.â
Sundayâs figures released by the Scottish Government show there were 0 deaths recorded overnight in Scotland and 316 new cases.
But the delay in test results has created a false picture and the government is warning there could be a spike in case numbers as testing catches up on Monday and Tuesday.
A statement on the Scottish Government website earlier on Sunday said: âWe were notified late last week of a testing capacity issue with the UK Government Lighthouse facility in Glasgow.
âThis has meant around 64,000 tests from across the UK, including Scotland, will be rerouted this weekend to other testing sites in the UK and Northern Ireland, including tests from our physical testing sites, for example Regional Tests sites.
âIt is important to note that the majority of these tests are still well within the 24 and 48 hour timeframe for results albeit we do expect to see an increase in the level of positives on Monday and Tuesday when the results are reported.â
However a UK Government spokesperson said: âThis claim is categorically untrue. There is no capacity issue at the UK Governmentâs Glasgow Lighthouse Lab.Â
âThe Glasgow Lighthouse Lab is highly efficient, with the capacity to analyse tens of thousands of samples a day.Â Rerouting tests to other laboratories is a routine practice to ensure timely processing.â
According to the UK Government there are now more than 500 test sites and mobile testing units in operation across the UK.
It claims to be expanding testing capacity rapidly with new Lighthouse Laboratories as they attempt to reach a target capacity of 500,000 tests a day across the UK by the end of October
The UK Government also claims it is providing the bulk of covid testing and processing in Scotland, in support of Scotlandâs health services.
News – UK Government insist thereâs no delay to covid tests at Glasgow lab