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It has a 100% sensitivity and 97.5% specificity.
That's what they claim, it later says:-
In the laboratory’s study, the test had a sensitivity of 98.5% which means that if 1,000 people who had previously been infected with coronavirus virus took the test, 15 of them would be told that they hadn’t had coronavirus when they had (a false negative result). It had a specificity of 99.5% which means that if 1,000 people who hadn’t had the virus took the test, 5 of them would be told they had been infected when they hadn’t (a false positive result).
So if 5% of the population have had it then using 98.5% and 99.5% figures we get:-
-ve result would be 99.973% accurate
+ve result would be 91.284% accurateIf 1% of the population have had it then:-
-ve would be 99.995% accurate
+ve would be 66.779% accurateIf 10% of the population have had it then:-
-ve would be 99.944% accurate
+ve would be 95.673% accurate(Caveat my fat fingers mistyping something into a spreadsheet.)
Greenbank-
So if 5% of the population have had it then using 98.5% and 99.5% figures we get:-
-ve result would be 99.973% accurate
+ve result would be 91.284% accurateIf 1% of the population have had it then:-
-ve would be 99.995% accurate
+ve would be 66.779% accurateIf 10% of the population have had it then:-
-ve would be 99.944% accurate
+ve would be 95.673% accurateWhat are you doing to get a shift in sensitivity/specificity based on an outside factor?
The Superdrug one is made by Abbot, a US pharma company. Just received PHE approval earlier this week.
It has a 100% sensitivity and 97.5% specificity.
I bought one yesterday morning and it should arrive tomorrow.
Take blood, send it back and get results in 48hours.
It will be good to know either way.