Jives 11 Posted June 11, 2013 Hi all, i would like to validate my ECHO to run eluates (both acid and heat) and was wondering if there is a certain amount of samples i should run. so far i have run 10 positives (2 actual ab's and 8 warm autos) and 3 negatives. thanks for any help! jane Share this post Link to post Share on other sites
David Saikin 1,359 Posted June 17, 2013 Most folks like the magic "20". Actually, you get to determine how many you think you need to run. If you are confident in your comparisons/results . . . and your Medical Director is too, you can stop when you reach that point. Share this post Link to post Share on other sites
