Posted June 11, 201312 yr comment_51360 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
June 17, 201312 yr comment_51439 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.
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