Question

訪

詢問一下 這題如何解

X
In which of the following cases has the limit of detection been reached?
Sample SD
Signal from analytical blank
Analytical blank SD
Signal from sample
1. Abs 0.0063
2. Abs 0.0075
0.0003
0.0017
0.0045
0.0046
0.045 ng/ml
0.0003
0.0018
0.037 ng/ml
3. 0.335 ng/m 0.045 ng/ml