Children under the age of five with potential coronavirus symptoms will be able to access testing for the virus from Wednesday.
So far, a test has been carried out on under-fives only if there is a pressing clinical need to do so.
With childcare settings reopening from July 15, the Scottish Government has reviewed the policy to avoid households having to isolate unnecessarily.
From July 22, under-fives will be eligible for routine testing through all routes including drive-in regional testing centres, mobile testing units and by ordering a home test kit.
Dr Gregor Smith, interim chief medical officer, told the Scottish Government’s coronavirus briefing: “We know that young children can become infected with Covid-19, but are unlikely to have severe symptoms.
“At the current time, the evidence suggests that it’s very unusual for the infection to be transmitted among children, and from children to adults.
“As we change the restrictions across the country, there are more situations where people are able to meet.”
He said the reopening of early learning and childcare settings and a change in physical distancing guidance for younger children means they are able to mix more and it will be important to know if a young child’s symptoms are caused by Covid-19 or not.
Dr Smith added: “We want to avoid households having to isolate for prolonged periods unnecessarily if young children in the family are displaying Covid-19-like symptoms, but do not have Covid-19, as these symptoms can be common in this age group.”
He said if a child tests positive, they will need to isolate for seven days from the onset of symptoms and household members will be asked to isolate for 14 days.
Anyone who needs to book a test should do so at nhsinform.scot/test-and-protect or call 0800 028 2816 if they are unable to access the online service.