- Joined
- Aug 7, 2022
Here's a link to the study. The specificity (ability to detect healthy individuals) of hair follicle drug tests is more than 90%, meaning that false positives effectively don't exist. However, the sensitivity (ability to detect unhealthy individuals) of the test is lower.But in which direction? Are they saying that people who did use didn’t pop positive or that people who didn’t use got false positives?
This is to say that the test gives false negatives, but only very rarely false positives.